That depends on the 4wheeler you get, and how you're hauling it.
Obviously some 4wheelers are made for trail riding, and some are work horses. A light 350 -400 CC bike would haul it if you were dragging 2 or 3 at a time. Maybe a few more if you were loading them onto a trailer.
We have hauled some pretty big lumber with a Honda 500, and even more with my Kawasaki 650. An argo would probably haul anything you can throw at it but they're not much good for an un-cut trail as they get high centered easily. It could make for a pain in the ass. If the land is pretty flat and hard, an argo would be great.