As long as non boss TZ, I'd say 125fcr psn nec. While psn/Merc tries to drop first skill, you prep for CE by casting amp.
Tele outside of pack, Lower Resist, nova, amp, ce, repeat.
This works great in lower mob ho like lit, but tbh, I haven't tested in TZ. I'm farming up an engima in SSF for this exact purpose, so hoping dps extend beyond puts and into TZ a1-5
Merc, golem, bone armor, and 1 pt revives add plenty of safety and a bit of DPS (cb vs bosses from Merc since strong golem can be insight. Merc is infinity + treach + guillam or coh for LL)