So I am building a Dell Precision 15 7510 Getting the i7 6820 2.7ghz Do I want to double the 8gb memory to 16gb (4x4 or 2x8) cost 101.21 Or double the 2gb nvidia m1000 to the m2000 4gb cost 120.72 I want to run at least 4 separate projectors in the future and the laptop only has 2 video outs so it w...