Hello, i'm looking for a Mirage G4 to put a SabreII 107 and a PD Optimum 126 in. The MX series would be optimal for these canopies. But there are so many different MX sizes. MX, MX-1/2, MXS, MXS- 1/2 . I am 5'74'' and have 165.34lbs.My torso is normal and my shoulder length is rather narrow than wide. Which size would be optimal for me? Thanks a lot!