unless you go with the tow behind a place like taylor rental isnt going to have the size you need, nor is it going to have the power to get the rusted bolts off. i have a (i think) 6 hp 30 gallon compressor and even with a really nice air gun at 120psi i had to use a breaker bar to get most of the bolts broke loose then i was able to hit it with the air gun. i have the price sheet for taylor rental down in my car and if i remember ill get it up here tomorrow.
http://rental.trusite.com/bethelpark/
for the big tow behind its this much.
4 hrs------Day --------Week
$85.00 | $125.00 | $375.00