I have an opportunity to pick up a fair amount of work maintaining detention ponds. My bobcat is getting old, and does not have high flow, so I need to get another. Any suggestions for a setup? Work would consist of cutting small trees 2-3" dia, and thick brush. Mow on slopes up to 3:1. What's the smallest size you would use for this work? Who sells the best bush hog attachment? Best places to buy cat and attachments used? Thanks.