Make sure the TV is 1080P and 120 hz at least. It may come with 3D, but you won't see anything in 3D unless your Blu-ray player plays 3D; you have a 3D Blu-ray; and you have 3D glasses. IMO, 3D is not a big deal. The greatest movies ever made were not shot in 3D.
My TV is a Sharp Aquos. It's also a "smart" TV, but I really don't use its "smart" features. I don't use it for streaming either, preferring to use my Roku for that. I got a Sharp because when I got it there as a big sale on my TV at Fry's. Any of the major brands will do. I also had a Mitsubishi DLP, but I do not recommend them.
I have a surround sound set-up for 5.1 high res sound. You will need some sort of receiver to output sound if you want to take advantage of high res sound. You'll probably want some kind of headphone that connects via bluetooth so you won't get tangled up in a headphone cord (I never watch movies with headphones).
As to an "all region" Blu-ray player, I'm not sure you need that now, as you are looking at entry level on home theater. I have an Oppo BDP-93 for which I bought an all-region mod kit. I am into classic films, and British TV shows, and Shakespeare plays that I can only get on regions other than the USA regions (Region 1 for DVD and Region A for Blu-ray are USA regions). For me, all-region play-back is a must. But some people won't need to spend the extra $ for it.
Thank you for your detailed information