And you right 980 vers is 8 percent but the game actually rounds up for damage. if you have 7.5 percent versatility it will actually give you 8, mouse over your damage in stats it will show in green.
Either way with that and on use trink Sub dance will wreck you now.
Feint is pretty useless for that. You need a GCD and the common dance is CS > 2 CP Rupture > Amb > Amb > KS > MfD > Evi > Amb > Amv Evi.
If you need to CS a second target to not being CCed while dancing where do you feint ? And in the Dance you have no globals for feint either. And it only lasts for the 1 Ambush after Rupture and not even 1 Tick of rupture.