Aye, for quanta I never run less than 7 QP/QT's and 5 Novas/Snovas for SoSebows, but then I always run 5 SoSe. You might be able to get away with 6 QP/5 Novas since you don't have any growers (which is a problem in PvP imo but not so much against Elders).
Consider Forest Spirit over Heal and Sanctuary over Blessing in PvP. This gives you better lasting power since Sanc heals indefinitely and protects against BH, better mid-game durable offence and a slight increase in speed (because Spirit costs 2 compared to Blessing's 3, starts out doing 1 damage and quickly grows over the 3 damage that Blessing offers).
Momentums are alright, if a bit situational. Consider Gravity Pulls for -very- powerful CC, making the stalling power of Sanc even better.
All in all, the deck is fine as is. Can only be tweaked really. I'd try to find a way to fit in SoFo+GP, but that'd require probably 8 QP's. Much easier to do with Snovas/QT's.