I recently finished removing 10 acres of 4" Maples and 8" Oaks from a nursery in N. Georgia. I bought a stump bucket for $600 and used it to dig the trees from the ground, fell them at a 45 degree angle from the direction of the rows and then mulch them with my FAE mulcher. I use a CAT 248 skid steer as a carrier. The whole operation took about 2 1/2 weeks and cost the landowner about $4500.00. After I finished mulching I went back and burned the mulch in place and left a relatively clean area. The landowner then used his front end loader to fill the divots.
I have used the stump bucket many times since then clearing large pines and hardwoods (12" to 20") for various clearing projects. I wonder how I ever got along without it?
Let me see you pile and burn with a bulldozer for $450/acre. Oh yeah, I also dug up about 300 stumps and hauled them 300' to a gulley and buried them for the owner along with mulching three 500' rows of 20' tall Japanese cedar.