You have a lot of light in this room. a project isnt a good idea unless you can control the light. If you did go that route i'd advise blackout curtains.
Definitely go with the Samsung, its a much stronger brand then westinghouse Great vivid picture and affordable. They emerged as a leader in the past few years. Pioneer /NEC are my top choice though also from your pic, you have great place over the fireplace or the opposing wall . I'd also...