I was using M K Sound speakers with Denon AVR and SVS subwoofer. Sound reproduction was reference quality. I would suggest this combination.
(1) TOTL AVR from Denon/Onkyo/Marantz. Or Lexicon Preprocessor+Power amp if budget permits.
(2)
M K Sound speakers for all channels.
(3)
SVS subwoofer.
(4)
Canare cabling throughout.
(5) 4K projector from
Epson.
(6) Dalite motorized screen
(7) Oppo TOTL Bluray player
With all this, you may slightly overrun your budget but what you will have will be a completely up to date reference class theater.