I speak from experience See
http://www.tractorbynet.com/forums/...weekend.html?highlight=busy+wife+this+weekend
Get a big boy,TLB a full size industrial Case or Terex etc. that can be had for about $30K. (be careful with JCB)
The machine has to be in working order, but can have a lot of wear.
Three things could happen.
1.) The machine breaks and will need major repair, your screwed.
2.) You spare killing a smaller trator, even large Ag suck at land clearing, sell it for what you paid for it, buy small tractor and live happy ever after.
3.) You keep it because you fall in love with the brute, and save for that small tractor. (Daughter will eventually move out and just visit.)