Bowtech360, I used to kill deer with a 43lb JVA Astro bow (think low, low tech) using 580 grain arrows. Inever chrono'd it but my arrows couldn't have been going faster than 160fps. My farthest kill was 28 yards. (my farthest shot on a deer yet)
Yardage estimation was critical.

You have plenty of draw weight. Don't worry about that. Worry about shooting it well at 30 yards before you attempt to take a deer at that distance. Also remember that deer move...fast.A slow arrow can result in a disasterous hit on a deer that jumps the string. Close shots are better.