</font><font color="blue" class="small">( I am new to this "tractor" thing. I need to get the foot high grass mowed. I would like a USA Deere, I don't think that I can afford one My needs are to main/mow the 6.5 acres, move horse poop (FEL), winter plow a driveway, perhaps back hoe (there are drainage issues away from the house, and perhaps dig a dry well for roof runoff, etc. Keeping in mind that I am not experienced in such tractors and actual use, plus my wife must beable to learn to drive the thing )</font>
Steve, you definately need to look at a machine with a hydrostatic transmission for your wife. In fact I would bet, based on your post, that if you get a gear tractor she won't ever use it.
Hydro machines that will do what you need come is pretty small sizes, but they are still fairly expensive. The Kioti CK20 HST is a small tractor, but big enough to do what you need done, and it is usually priced well below Deere/NewHolland/Kubota. Those 3 are typically the highest priced machines.
I would skip the backhoe, they are very expensive and the smaller ones can't do much real work and (in MY opinion) are not cost effective and a huge waste of money; but folks on this board typically disagree with my opinion on backhoes. If you need a back hoe, line up your jobs, rent a real unit, get the work done in 1/10th the time, pay a few hundred dollars and save $5000 or more on the cost of the purchase.