NICE BLAZER!!
IMHO, I like the "before" picture...I know from having a lowered Blazer that it helps to have a little side wall cushion.
As far as what wheel tire combo you are looking for, I would say to achieve that stance, you should look at 18's and 20's.
BTW- I like the black grille....
As far as BEST place to find a top- IT'S RIGHT HERE. THIS BOARD IS THE ABSOLUTE BEST PLACE TO FIND ANYTHING RELATED TO THESE TRUCKS.
I would stay away from "evil bay" ...buy from friends!!
just my 2 cents.