Starting a new dedicated HT

IMO making any HT or Audio only system family friendly (one button ON/OFF) really makes it inviting to use. A cable or after market remote can make this possible along with an amplifier and other components that use low standby power.

Personally, I went from 5.1 to 7.1 and I would never go back. JL Audio and Velodyne offer some in wall subwoofer options that would be worth a look. I've yet to hear an in wall speaker system that worked for my ears but you may find some aim-able models that work for you.

If I were building from scratch in wall cable conduit and AC receptacles at the speaker locations would be a must, There are audio related building materials and techniques that are worthwhile to look into.

Have fun with it and don't rush it.

Thanks for your responses. So here's the system in works.
1. Integra 60.5 receiver. Might use as processor in the future with separate amp. Going this route because has 4k upgrade that other Integras don't yet include.
2. Triad lcr bronze inwall 7.1 with 2 triad subs.
3. Jvc dla4810 projector
4. Stewart film screen 115 inch 2.35 format
5. Oppo bluray
6. Harmony remote

What do you think?

any room treatment, soundproofing? I DIY my home theater, if I could do it again, I'd definitely spend some time and money on treating the room first, because once your room is done, you can't go back and redo them easily. The speakers and all these equipments, if you don't like them, you can easily swap them out the next day. Just my 2cents.

I'd go with the SI Black Diamond over the comparably priced Stewart. The SI has superior black level in all lighting conditions, as well as contrast, and rejection of off-axis wall color and stray light. The latest has enough refinement that It's hard for me to go back.
Gotten spoiled by being able to view a large screen movie with ambient light in the room, and so have my guests. Nice lifestyle upgrade! FYI