i'm in the same boat. i have shoulder issues too. can't even count the # of surgeries anymore. i still can pull a 50# bow though.
i didn't think about late season at all. i have some small blinds that i cannot bow hunt out of but could xbow hunt out of. that will be nice, sitting in there w/ a heater.
i'm just scared of the woods being full of folks w/ crossbows in october/early november when i normally have the woods essentially to myself. hopefully, it won't be too popular. i'm already reading up on different models myself.