Extreme Trailer tires wheel size problem. Have any Bu owners gone through this?

OK so to update things, I went to Discount Tires and they found me 14 inch rims that will hold a 205/75r14 tire in D load capacity. 5 tires will run me about $700 after tax and installation and all the other little fees. The rims will run another $300 or so. So thats around $1000 which I really do not want to spend.

Now if I get the trailer lifted, I imagine I still will have to buy 5 new tires and that will run probably close to $700 also total. Does anyone know how much a "trailer shop" would charge to do this trailer height modification?