Can you post a floorplan? hard to know what is going on with photos only.

I would not exchange the two dining areas, I would just eliminate the kitchen one in favor of a built-in that could serve as a coffee/ bar area with glass uppers for pretty storage. Simply put you have a nice formal area no need to make it seem like a misplaced nook right beside an eat at bar area.

I would relocate the dining table and move it down more centered to the open space, since you are scraping the ceiling its an ideal time to move that table away from the bar area.

Nice sunroom! Is the plan to place banquet bench against the wall where the hutch currently sits? Wondering if the floor vent will be an obstacle to placement? Seems like a lot of furniture in that area with banquet & hutch, especially if both against wall. Since the plan is to paint hutch to coordinate with cabs, what about putting it in kitchen space vacated by banquet? Looks like you have 3 eating areas, bar, sunroom & banquet. The storage in hutch would be nice in kitchen. Maybe the wine console could go into kitchen too - at right angle to where banquet is now - looks like a window opening facing kitchen.