You may want to consider new projectors. I have an Ultra-Short-Throw (UST) projector at 100”, although it’ll do 120”. Most of these projectors support 3D. It seems part of the problem people had with 3D was the immersion. Watching 3D movies from 10’ away at 100” is fun. I don’t see any cross-talk between left and right images. The active glasses are at 140hz now. It’s also 4k and does a descent job at upscaling. The 4k movies look incredible.
Modern projectors are moving to laser light sources, no bulbs. With UST projectors nobody can walk between the projector and the screen either. The only real downsides are the effort getting everything calibrated for the space you’ll use and the black levels don’t come close to OLED. That said, I don’t have $20-30k for a 100”+ OLED and you’ll probably still not have 3D. To get the best blacks/contrast you’ll also need an Ambient Light Reducing screen, which aren’t cheap. I’ll take the size over “blackest blacks” all day (personal opinion). My projector and screen totaled ~$4k....but that was 2 years ago.
-PJ