TO handle a 2500 lb. log safely , one would need a tractor capable of about 3500 at the pins (this is where most lift capacities are determined and listed). In order to get that much you are into Utility class tractors and you sure don't need something that big for 2 acres. I would forget about handling logs and just get someone with the proper equipment to come in cut down, haul and saw them up.
For about anything else on a parcel of your size, a B series Kubota would be the maximum size that you would need for normal chores of hauling dirt, mulch, rocks etc. They have adequate ground clearance to take into the woods for clean up of brush.