Set up is 29.5 inch draw 71lbs out of a cam 1/2.

Goltip 5575 @ 27.5 inches at 380 grains yields on average thru chrony 289.7 FPS and 71# KE.

Goldtip 5575 @ 29 inches at 392 grains yields on average thru chrony 285.6 FPS and 71#KE.

Are the 5575's spine enough for this set up?

Also I will be picking up an extrme vft this weekend. @ 70# will the 5575's be underspined on it? Should I buy some 7595's or is that over doing it?