Good parts aren't cheap so save up and i guarantee you will be money ahead in the long run but most importantly do your research and shop around. The forums for sale section and want to buy sections has saved me a lot of money vs buying new.

Depending on ride height, camber, tire size and offset of the 15x8 then fender rolling may not even be necessary. I have 15x8 +25mm w/225/45/15s and at stock ride height it was fine, of course, once lowered more than a 1" then fender rolling was necessary; had the same setup on my NB1 as is on Warbird(NA8) currently.

Pulling the fenders is a option but again how much is necessary depends on the previously mentioned variables.