Only 70"? Money unlimited my man

Think big!
Build an addition onto the house to hold a 30-40ft diagonal screen. Stadium seating with quality overstuffed recliners. Sound system designed and built by THX. The best projector they make hooked up to a common height system with optional 35mm projection. Pioneer top of the line Elite blu-ray player
You have to put some limitations on it to be a worthwhile exercise