Hi there, best is to check the widths - Blast 115 is 66cm wide, the Jag 108 is 68wide and the Jag 125 is 75cm wide. For more high end speed the Jag is a good option yes, width wise unless you want to go much bigger, then the 108 should be enough/matches the 6.2/7.2 perfectly whereas the 125 will fit slightly bigger sail sizes. Also for your weight 108 is better.