Wow this stuff is confusing. So online I see bathrooms listed as needing anywhere from 56 lumen per sq ft to 80 lumen per sq. ft. (if my sources are correct). The room is 52 sq ft which means 2912 - 4160 lumen for the room. Currently we have 2 standard GE BR30 flood lights in the room which have an output of ~700 lumen each or 1400 total. Maybe we just don't like bright light, but we think the 1400 lumen in there now is plenty. The LED recessed bulbs I am looking at are about 320 - 400 lumen. I am just worried that if we use the calculations above that will be way too much light. I don't want my contractor to install this many recessed lights only to find that we need sunglasses to enter our bathroom. Not looking for a sleek modern design but actually just the opposite (traditional bathroom with sconces). Was thinking of going with LED because we want to be ahead of the curve and not find ourselves 2 years down the road with outdated traditional bulbs when everything is LED and us needing to replace dimmer switches, etc. Can anyone recommend a 3" shower (wet rated) IC recessed light that we can use LED bulbs in? Not having much luck. The ones I found appear to be with an integrated bulb and I don't like the color of the bulb or they are not IC or wet rated. I may just need to switch to 4" if I can't find anything. Or for that fact give up on LED all together.

You may have already thought about this, but dimmer switches will make whatever lighting scheme you decide on more flexible. Also, think about where furniture will be before placing the recessed lighting. 18 months ago we moved into a 25 year old house that had a finished basement (also with some windows, like yours). While they at least had dimmers on the recessed lighting, the placement of some of the cans was puzzling, even considering where they had their furniture when we saw the house before purchasing (the previous owners did the basement fit-out). I like the one room that has cans in the four corners and a central fixture which is a semi-flush 3-light (the cans are placed about two feet from the walls). The result is that the room is lit very evenly without the use of any table or floor lamps. I use the room for an office so I have a desk lamp for task lighting. Even if you don't use the other part of your basement, if you finish it so it could be used for a family room it will be good for your resale value. The next owners may want to put their teenagers down there with a big television. :-) I love the idea of the full bathroom. That is something I don't have in mine.

Some give out more light than others. I have this in my hall bath and it looks awesome and provides nice ambient light (perfect for guests) but it isn't good enough light to shave or put on makeup. Some have the lights facing forward and I expect they would be better for that use.

As @Lyndee Lee pointed out, these mirrors produce 300 lumens, which is the equivalent of only a 40 watt bulb. These are meant for accent lighting, not task lighting. For both baths, I recommend additional sconce lighting. Also, a Solatube is great for the daytime, but at night, the shower will be dark. I recommend additional recessed lighting in the shower. In general, for very good vanity lighting, I prefer sconces flanking a mirror instead of lighting placed above. I aim for over 2000 lumens total per mirror (dimmable) and a color temp of at least 3000k (the mirrors are 2700k).