Jelc,
Congratulations for the nice machine. I have the older sister of the 2320 and it is a very good machine. If you are going to skid trees the other thing I would say you want to buy or make is one of those contraptions that attaches to the 3PH. I don't know what it is called but, using chains it allows you to lift up the butt end of the tree and drag it behind the tractor. Those B-Kubotas really rock!!! You will not be unhappy. You might be able to make wheel weights out of concrete. It takes more time then to write a check, but it could be done for about $50.