A dozer is the last thing I'd bring in for stump removal. An excavator or trackhoe would be my first choice, especiall with big stumps and plenty of them. If the price for one of them is too much, get a backhoe in there.
I'd want a trackhoe of at least 100 hp and prefer something closer to 150 hp or more to get it done quickly.
A dozer will spend too much time moving more dirt than you need to move, and unless its a big dozer, it might not even be able to move very much dirt when it gets through the top soil. Depending on your conditions, what's under the topsoil could be extremely hard and very difficult to cut with the blade of a dozer. My dozer weighs over 40,000 pounds and has 168 hp and I park it before wasting time and energy on stumps.
I have a Ford 555E backhoe that I use on stumps and big trees. It's ten times faster and easier to use, than my dozer for takeing them out. Especially the big pines and oaks.
Good luck,
Eddie