I agree, there is not much to be said without more pictures, but looking at what we have, and not knowing the size of your starbust mirrors, I think you could hang them to the right of the TV to fill up approximately the shape I've indicated below. Second point, look for a striking rug that has a similarly natural, organic feel. It could continue your neutrals theme or introduce colour, but I'd definitely go for some kind of organic pattern -- not a geomatric design. I've just come across this one and I love it. https://www.overstock.com/Home-Garden/Hand-Knotted-Roth-Abstract-Pattern-Hemp-Rug-5-x-8/9912730/product.html?refccid=CPCHMYDRCEE2WRKCR4625KZO2Q&searchidx=337&keywords=&refinement=material%3ANatural%20Fiber

Move in. Live in the space and see how it works. The house will tell you what it wants. In the meantime, start an ideabook for every room. By the time you're ready to start designing, you'll have a clear idea of your style. Then come back with photos of the house as it actually is with whatever furniture you already have, and we can help. Right now we don't have near enough information to make any suggestions. Don't be in a huge hurry to rush out and buy stuff. That's how expensive mistakes get made. Have a plan before you buy a single thing. Otherwise you'll be stuck with the too-large purple couch you fell in love with and won't be able to make it work.

I like those sleepers too; here we call them "clickers" or "click-clacks." They are hard to find, and most links take you to futons which are not the same thing. I have one in my vacation rental cabin. For your space, I would prefer a small scale sectional on the two wall sunder the windows. No curtains, but top down/bottom up shades where you can block roof top views or electric lines or all of it. Add a large storage coffee table. I like this one myself and it comes in a blonde finish too that might be better for the beach. Get a pair of floor lamps (not dated torchieres) for each end of the sectional. Then I would center the TV/FP on its wall and add one or two swivel chairs perpendicular to it. In the corner where you have the kitchen chairs, you might try a game table with a pair of chairs for checkers, chess, scrabble or monopoly. How about a new, more beachy wall color like Sea Salt to work with your sandy beach carpet? Last of all, upgrade your art and wall hangings. Here's info on the paint color. https://pizzazzerie.com/lifestyle/sherwin-williams-sea-salt-paint-color/

Congratulations on your new vacation home! We just redid our kitchen/living area at our small lake house. We also did it on a tiny budget. Our biggest savings was getting cabinets used that someone else didn't want. You have an easy straight run of cabs there. If I were you, I'd haunt Craig's List, facebook marketplace, Habitat's Restore, etc. and see what you can find. I could have done ours 3x over with great cabs I found online. I remember kicking myself for not waiting a bit as someone was advertising an almost new set of cabs from a basement kitchen they were removing for $500! Solid wood drawers and everything. As it is, I was able to get a decent set of maple lowers with large drawers (drawers rock!) and white uppers for about $600 total. Don't put new counters on those old cabs. At least replace the lowers. I def. agree about removing that weird peninsula thingy. Have you thought about adding cabs where the white stand alone cabinet is now? I'm not clear about whether you are changing the flooring? In terms of paint, I always have a general idea of paint colour in my head when I start a reno whether I know it or not. If you haven't already, start a pinterest page and gather images of similar spaces you love and then you'll get an idea of the direction you want to go. I agree with your husband about the ceiling. It will be the centre piece of your room. However, the paint colours you are considering are not going to do it any favours. The blues are too cool and are going to make the space feel smaller and lower the ceiling. Personally, I'd do everything a warm, neutral white (Steam by Ben Moore?). Before you do anything with the wood stove bricks, check and see what you need for safety. Our new wood stove could be closer to combustible sidewalls than our old one, but each stove has its own specs. ETA: Is the furniture in the picture staying?