I don't know which thread to post this on, so I'll post it to both. Apologies if I'm doing this wrong.

So let me see if I got this straight. B4 is a dps loss, but openers and TC rotations make B4 a dps gain?

In single rotation,
If I understand this right, my goal is to: B4 opener, 3.X (5xF4 version), 4.X, 3.X (5xF4 version) with LL, 4.X, 3.X (5xF4 version), repeat from B4 opener...

As for the multiple target rotation,
These are my optimum rotations per enemy total atm:
2: T4 B4 F3 F4 F4 Flare Flare
3-5: T4 B4 F3 Flare Flare
6-8: T4 B4 F3 F2 F2 Flare Flare
9+: T4 F3 F2 F2 Flare

There was a disclaimer for progressing SpS that I left out...

Also, if this is correct, what number of enemies should I switch from single to multiple rotation. I believe in HW, we weren't supposed to switch from single until at least 3 enemies. Can we switch as soon as there is 2 enemies in SB?