Tire help style 5's 18

[hinds90]

I picked up some staggard style 5's 18x8 front et20 and 18x9 rear et22. I plan on going pretty low. Just wondering what tire size I may need if I plan on going pretty low not slammed but lowered.

Also would I need to do any fender work.

[saloon]

What make and model are they going on?