This isn't a bad deal, but personally this Elite screen is no better than projecting to a flat-white wall. I would recommend a higher-end screen...these guys seem to have great deals and gaining a lot of momentum on the internet (www.projectorpackages.com).
I wondered if someone would think that...this is really not my company. but I do know they have great products for very cheap. These guys have done all the IMAX screens for the past 20 years. Again, this screen that you mention is not bad, just not a professional class series like you would get with a high end Stewart or ProjectorPackage Screen.