I would guess the Phoenix with a Boo string will do just fine on a moose. I have a Vortex and been working on a setup for bison and came up with a 535 grain arrow using Easton FMJ bolts, a brass insert and a 100 grain fixed BH. With a flemish string I expect 295fps with that and to keep 96% of that at 30 yards. The Phoenix is advertised at 25 fps less than my Vortex, so let's just say you'd still be around 259fps at 30 with that arrow. That's still 79 ft-lbs of energy at 30 yards. Should blow right through a moose with a good fixed blade BH like a Montec or something similar.
Welcome to the forum! You will LOVE the Phoenix.
"Remember...always drink upstream from the herd."
Slick Trick Magnums, Magnus Stingers
BEA Exec and Zombies, Easton FMJs
2" Gateway Rayzrs
Boo String, DeerBoy Archery Strings