You don’t need an ottoman if the sofas recline.

The new chair could use the ottoman (providing you size the chair with existing ottoman). The ottoman in this photo is 38"...notice how the chair is just a little big wider than the ottoman,

The rug: buy a good pad for it as right now, it just looks like any ordinary indoor/outdoor rug.

Get the front legs of the sofas up onto the rug.

You have selected these oversized sofas that are not very attractive from the back. I would flip the seating plan so that the sofas are not such a visual hurdle in the room.

With this layout, there is a better location for an end table so people have a place to set a drink or plate. It also offers a location for a table lamp.

Pull the tree out for the corner. If that tree was real, do you think a planter that small could actually hold up the tree????? Place the tree in a more realistic-sized planter.

Even though you have reclining seating, I would still use a coffee table in the setting, but select one that easily slides out of the way.

Install an uplight in the base of the tree. It can be battery-operated or electrical

Just do the tile and then bring the color over to the island with blue stools.

I think with the openness of your kitcen, painting a bold color will be a challenge on where to stop.

Would you consider a green? The putty color of your cabinets, to me, lends itself to a more earthy color.

And I'd do a backsplash, Kitchen Aid Mixer, barstools and a couple funky island pendants (looks like there is a prewire)

DO NOT paint the island.

I would not paint the island. Painting half will not look nice. Put in your backsplash, and then add the blue in stools and accessories.

What rooms are on that side? You could do a cover that stops short of the main door, keeping that for unimpeded access, and swap a window to a patio door, which would help offset the darkening of the added roof. If that’s the west facing side, you probably could use some light control, honestly!

I wouldn't make any decision about changing the front of the house until you've lived there for awhile. You have a beautiful home as is, and you might make a decision you regret later. This is not an emergency decision you must make immediately. Put some kind of seating out there and see how much you actually use it within a couple of months. Also, this is an exterior project, so it's not going to affect your living conditions if you wait.

I can understand the desire for a screened porch. I too live on a property with a lot of water and bugs :) Call in a pro to help you with this. If you put a solid roof on it, it will block a lot of your light on that part of the house. But it could be possible to build it like a solarium or conservatory with a glass roof that is attractive. Probably not actual glass now a days. It would need to be pitched for the sake of snow load and rain run off. Another issue will be the precipitation. Currently it runs to the roofline- if you do a roofed porch, you need to accomidate that. Those are probably your biggest building challenges. Adding in screen walls is more of a visual challenge. But people do manage. You can use your framing to help create visual appeal, some folks use gingerbread to dress things up. Landscaping helps too.