Hey guys my birthday is coming up in a few weeks and I'm interested in getting the torque thrust m black rims.. I wanted to get the 18x9 in the front and 18x10 in the rear.... I have several questions

Here are the fronts
http://www.wheelsforless.com/SearchR...8x9&Exact=True

1. What do I need to get the 18x9 to fit nicely up front
2. What what tire size should i run I don't want to go bigger than a 245 upfront

Here are the rears
http://www.wheelsforless.com/SearchR...x10&Exact=True

3. What do I need to run to get the 18x10 to fit on my ls1 rear
4. I want to run a 305 tire out back..... so what side wall would be good...