In that window, to make it work for your husband and you and allow you to control the light, I would use wooden blinds that match the trim (and a shade lighter if you can't make it exact) with attractive tapes. I'd use very light-weight ones, and use the widest slats I could make fit, because it takes fewer of the wider ones per shade, which means that they stack up higher when you pull them all the way up. If that is appealing to you, from what I can see, you will need to add a header from which to hang them, so that they will clear the windows when open. That can be masked with molding stained to match. Some blinds have valances of molding available to match. And it also means measuring carefully from side to side, based on the spot at the top where they would hang, because every additional bit of distance out from the window means their width might have to be reduced a bit, so they will clear each other at the inside corners. (Am I making that part clear?) For the safety of your children, whatever treatment you choose, think about how to corral the cords so they can't get tangled in them.

We are not window treatment people either, but have started to add some as we've reno'd/decorated a few of the rooms in our house; two bathrooms and our office. They really do help to finish off a room. That said, we're not covering our kitchen bow window, or the DR bow window, though I might consider something for the DR window at some point--just for the window panes themselves, not to cover the whole bow-unit. We used Hunter Douglas' Designer Screen Shades in the Roman Shade style (ours are mounted inside the frames becuase of our window style/frame depth). The shades are very clean-lined and range in sheerness. With the sheerer weaves/fabrics, you can see outside with them down and they allow a lot of light in.

Sorry this is long. Glad for explanations. Gotta think on this. I would urge you to have complimentary or same or semi-modified treatment on all suitable windows if possible. This would coordinate the look from "room" to "room" and if done well, would add a classy look. You don't have to do it all at once, though. Something modest now and save up for the custom look you crave? Are the existing curtains something that you want to keep? If so, is there a way to coordinate them with additional windows? Is the fabric still available? Can you find a solid colored fabric that is a suitable match in fiber and texture that could be used to link the window areas--a band of solid or print trim on the romans, for example? I wonder what others who have greenhouse garden windows do about window coverings? It is possible to drop a roman between the bump-out window and the room. There may be moisture issues with plants, though, so you might not want the window to be too tightly isolated from the air circulation in the room: mold, rot for woodwork. I am also thinking through the window covering issue for our house and want to be ready if the "4 for 3" sale comes again soon. Have put up tension rods with semi-transparent half-curtains in new kitchen for light and privacy temporarily (see below). DH is in hunting season mode and hasn't finished exterior work, which means that the new honeycombs that just arrived won't go up for a while, and the windows in new kitchen and lobby area will not have sills and mouldings for many months yet, I fear. So I keep designing and redesigning my window treatments in my head. As of now, I plan to layer a strongly patterned roman shade over the single color honeycombs, which will allow me lots of flexibility for all seasons and will give a graphic punch to a window wall that lacks cabinets. Like you, we have purchased a door with miniblinds within the window panel. It's the front door in our new lobby and am glad we did buy it because of light issues. Am not sure how I'm going to coordinate it with the new high, wide window a few feet away, though. A quandry: Should I buy a very narrow white metal blind to match the door's blind? Even if I don't particularly want white? Belligerently, I'm tempted to use a different product altogether, to add color and texture depth and undercut the mod-ness. It's important to know as much as possible about the room before you choose your long-term window treatments. If the backsplash is to be a pattern or a real attention-grabber, you don't want windows to be competition. Same with strong colors, etc. If you're still dithering on the backsplash, try doing what I have done and get a cheap tension rod for the eating area and put up something temporarily. Sewing curtains and valences and roman shades can be very do-able. It's most work on the flat and the seams can be made straight if you use a seam guide on sewing machine. (I have a battered piece of tape that guides me.) Here is a link that might be useful: semi-transparent half-curtains on tension rods for temp privacy and sun control

Ok, if you want a Roman Shade I would just do one to cover the whole bank of windows. One for the 3 window and one for the 2 window. How tall are your ceilings? Many people will mount the Roman shades higher than the window casings and allow the bottom of the Roman shade to cover just a small portion of the window, allowing for more light. You could do a wooden blind underneath for privacy and light control. In this case the Roman shade does not have to be operational but stationary and the blinds underneath will be what you use for privacy and light control. Bamboo blinds under a Roman shade are also a nice option.