Your 270 will be perfect for Elk. Shot placement is
always the key, so plenty of time on the range will
help. Getting an Elk out alone is a real challenge,
if you can possibly find someone to hunt with or
at least will be willing to help once you have an Elk
on the ground and need to quarter it up that will be
beyond value. They make a 2 wheeled game mover
that works really well, just make sure you get the tires
that are solid ( do not take air ). Cabelas sells them.
The point about hunting uphill for Elk so your bringing it
out downhill is a good one. Good Luck!