We have renovated 2 homes in the last 20 years. I used Behr on the first because it was less expensive, we weren’t planning on staying and was easier to get from the big box store in the evenings (paint store had more limited hours). Never again! We painted ourselves and not only did we use more paint to adequately cover, it drips more. The other major issue was that when we went to sell 3-4 years later and had to touch up, the color had changed several shades—no way to touch up and feather it out to blend. I had to repaint 2 rooms it was so bad! On our second house, I have used nothing but Benjamin Moore and love it—goes on easier without dripping and covers much better and you save a lot more time in the long run with better results. We have always used eggshell for walls (cleans up great for years) and semi gloss for trim. Also, when I have gotten bids from professional painters, most of them will only use BM or SW for interior work (I am in the Midwest). It is more expensive in the short term, but well worth every penny!!!!

Looks very cosy in there. I actually like vintage stuff and furniture. Buying a new house is such a responsibility but when you can change it and make everything by your taste is such a blessing. Hope you are happy in this house. I bought a house from badya palm hills a few months ago and I just ended to put everything on places. My interior is darker than yours but I just like more greyish colors. I really understand your challenges. However, I do feel like home in this house. That's the most important thing.

Check out this article https://www.houzz.com/magazine/designer-secrets-10-pros-share-favorite-off-white-paints-stsetivw-vs~79502890

Color doesn’t have to be consistent, but sheen and durability should be different from what is used in the interior. Link below is very helpful and also has color suggestions that will better handle scuffs/wear and tear vs white. https://www.garagetooladvisor.com/design/best-paint-garage-walls/