Heavy rifles are good for accuracy when shooting rested off a bench. Not so good when carrying it around for any distance, hunting, shooting off-hand, etc.
Rifles with a bottle like your Air Wolf give you lots of shots between fills, but generally add to weight and require wider stocks - maybe contributing to the 'cumbersome' feeling you are getting. They also pretty much require an SCBA tank or HPA compressor to re-fill. Guns with smaller air cylinders can be refilled with less expensive hand pumps (until you choose to purchase a SCBA tank or HPA compressor
).
If you want to stay with old-world style build quality, beauty and accuracy, you might want to look at a Daystate Huntsman Regal (cheaper, if you are O.K. with a bolt action) or Huntsman Revere (newer model, with side lever cocking). These will be lighter and narrower since they have an air cylinder instead of a bottle.
A couple of other guns you might look at ditch the old-world kind of feelings for modern precision CNC type feeling. FX Dreamline Light or, if you want a more traditional wood stock, Dreamline Classic. Lighter, narrower, also high quality and accurate.
Guns mentioned above are high quality and higher priced guns, as your Air Wolf is. Less expensive guns are obviously available, but some will have their trade-offs in accuracy, reliability, parts quality, etc. Although for an occasional shooter who is testing the air gun waters, maybe they will be just fine? Benjamin Marauder or Cayden come to mind, although I don't have personal experience with either. Buy them direct from Crosman using the AGNATION discount code on a Friday and you get 25% off (IIRC) and free shipping.
I do realize the rifle is high end and very accurate. Might decide to keep it after all is said and done. 
