I agree with Gary and Riptide. Stumps are a killer, but you will only have to remove them once. Rent/hire a big machine to do that, then get a reasonable sized tractor to do your normal stuff. We have a similar setup to what you describe, 40 acres of heavy oak forest in central Missouri. We cut down 175 trees for the house, then had the dozer and backhoe guys pull the stumps. We pushed them into piles, and soaked them with diesel, and lit them up. What was left after a few days, we buried in the low spots. As I have been clearing further back for a yard, I have found a few old stumps, and once again, drilling a few holes, soaking with diesel, and lighting a match takes care of them. I can then take the tractor/loader and scrape out whats left, and get on to the next one. A big tractor is always nice, but can be a pain in the neck when you are doing landscaping, and maintaining a yard/driveway, etc. After much shopping, and talking to lots of knowledgable people, I settled on a Kubota B2910HSD with R4 tires. It has been perfect for my needs. If you don't like orange, the JD 4xx, or a NH Boomer are a couple of other options in this size.