@amg56
You have a very good advantage, as you are building your home from scratch, if I understand correctly. Your room/treatments is the most important part of the system that you will be putting together (IMHO). It seems that you have some good $$ to spend, so deal with the room first. It’s the single most important issue that most of us have to had to "tame" with the conditions that we have with our existing rooms. You have the opportunity to get the room dealt with before the gear. After that, well, it’s all about your personal preferences sonically for the gear that you fill the room with. Good luck, and please keep us notified on your progress.