Got the Flexigray 16:9, 71x126 material hand carried by a friend. Thanks for the inputs, Weng.
The creases are ugly, but I am hoping this weekend's DIY screen framing session works out well.
I still have until this weekend to finally decide on what screen dimensions to build, or even relocate the beamer closer to the screen. Q: Would a theoretical brightness of 15 fL (projectorcentral) be good enough for my room assuming light is controlled (curtains, night vieiwing)? Am initially planning to build a 138" screen with the H6510BD 13' away.
My other option to bring the projector closer to around 10ft., but since the ceiling is hardiflex/metal furring, I have very limited mount points that are rigid. Hope to hear suggestions and inputs.