RE: Is 50lbs enough?
When i started out bow hunting i used a 45# recurve.I took several deer with it.Be sure to use a sharp broadhead.
The draw weight could be differant between the two and it could be the differance in cams.
Back to your set up.....My late best friend shot a 50# recurve for 20 yrs. and always used 145gr 2 bladed broadheads with wooden shafts.And usually had complete pass throughs on his deer.
It's not how big the Deer,But the size of the experiance that matters!!