You won't be able to stop grinnin after the first time you "bite" a few branches... then come down on more piles of branches... all in one load. I'm still grinnin after 20 years ...
I just did this to my subcompact and it is so much better with some weight. I bought the box that fits the three point hitch and instead of filling it with cement or sand I added 3 layers of lead bricks and put a piece of plywood over the bricks so they are not exposed. 225 pounds of lead , the box is just under 150 plus anything else I put in the box probably puts it right around 400 lbs. This left most of the box open so now I can use it for storage of chains and stuff. Also added a saw holder on the outside of the box.