Nice combo run.

However, can I ask why do you do Jump before Spineshatter?
Wouldn't it make more sense to use Jump in place of Spineshatter, after Power/Life surge.
Jump = 200potency
Spineshatter = 170potency.

Wouldn't you get more bang for your buck out of the Jump in the long run (assuming you fit the timings correctly to try and get it off on the end of B4Bs duration)