The first thing I would do is get rid of the 70 and 60 yard pin. Elk hunting
is alot like turkey hunting. The goal or challenge is to get them in
close. When I go out west I usually have a 20,30 and 40 yard pin.
Most of your shots in the dark timber will be 30 yards or less. I think
your set up should be fine with 2314's at that speed. As suggested,
use a cut on contact broadhead if you are conserned about penetration.
The first bull I harvested with a 2213 arrow at 230 fps blew clear
that bull at a distance of 21 yards. The second was with a 2314 XX78.
Good Luck on you hunt.