All depends on how good you are mechanically. Do you have the skill, tooling, shop, etc, to split this tractor and change the rear housing. It being a hydro may be more costly. It's a thread here where a gentleman needs a hydro shaft but NH will only sell him the complete hydro transmission. That tractor in good shape in my area would sell for around $20,000 in this economy, maybe more. If you part it out the backhoe would bring around $4500 to $5000. The front end loader would sell for around $4000. Someone who wanted a different configuration of tires/wheels would probably give you $1500 or so. You can recover the money you spent easily. All depends if you want a few thousand now, or a good tractor later.
Jinman.........what say you?