I have a John Deere 3038e and it has been a great tractor. I have a 6 acre yard that I use it to finish mow and about 3 more acres that I keep bush hogged. My driveway is over a quarter mile and it is gravel. So I use it to spread and level the drive. It is a great little tractor but if the rocks you are talking about are big, then it will not help a lot. It does not pick up very much on the front end.
I was able to get a great package deal though. Finish Mower, bushhog, box blade, and pallet forks for the front for the same price as I could have bought the same size Kubota with only 1 attachment. Good luck in your search.

John 3:30 (NKJV)
30 He must increase, but I must decrease.