On the Homefront

I've been thinking a lot about how to decorate our home. We've lived in it for 1 year now and we moved from a traditional 1912 Craftsman Bungalow to a late Mid-century Ranch and doubled our living space! However, the furnishings from our old home doesn't really translate into our new one. For some reason I feel guilty talking about how to style one's home when there are so many other important topics going on in the world, but for me it is a creative escape, a shelter. So, you can see what I've come up with over on Pinterest. If you have any suggestions, I would appreciate them!
What to do with the media room. I've toyed around with the idea of a jumbo, automatic movie screen and projector but for me the cost difference between that and a big 'ole thin lcd wall mount just doesn't compare. So, I saw this and was interested...

We have a very loooong wall and I think this could work. We are in the process of removing some original wallpaper from said wall and once we decide what to do with it, I think we can start making some decisions on furnishings. I am aiming for the full decor vision and am nervous to make a move without first having a plan. What did you do when you decided to start decorating your home? Are you happy with the decisions you've made and if not, what would you do differently?