Alamak; how to check. Bought the Unic 73” High Contrast Grey Material projector screen.

can a 720p projector beat a 50" plasma in terms of picture quality?
(since image is projected on a big screen, and yet with 720p only, image is less sharp?)

i have done a little calculation for the 100" diagonal image size projection from a throw distance of 12 feet.

if i want the center of the image being 50" from the floor, the projector would have to be placed about 80" high up from the floor (offset included)

i'm not planning for a ceiling mount installation. is it simple to install ceiling mount from the plaster ceiling?
else, a karaoke speaker tripod would suffice as very tall one is easily available at Jln Pasar.

is it possible for the pojector to be placed lower (such as 60" from floor so that i can use a projector trolley), and can the vertical image shift give enough compensation for that?