I agree with S-10. 55 is fine. We let a buck lay overnight a few years ago my buddy shot thru the guts.. about 55 that night. He didn't get it back to the truck until about 10:30 the next morning.. then took 2-3 hours to get home and take pics I believe. Part of the hind quarters had to be pitched.
My reports and advice are for everyone to enjoy, not just the paying customers.