Lowered and Rally wheel questions

[blazed870]

I found a guy that has 2 15 x 10, 2 15 x 8, and 2 15 x 7

He has new tires on the 8's and 7's and would sell all four for $500 or he will sell each wheel, without tires, for $50.

Is that a good deal or is it kind of steep?

Will I have issues with running the 15x10's on the back or the 8's on the front?

I just have cut springs up front now, but I plan on running the 2.5" drop spindles and either 4" springs or air bags.

Thanks