lowering 72 rear leafs

[sledge_hammer]

Looking for help on lowering my 72C10, s/b, s/s that has rear leafs. I am installing 2 1/2 drop spindles, and would like to lower the rear 4-5". What are my options?

Also, what size wheel tire combos work well, the same size front and rear, that will fill up the wheel well, and big bite on the rear. please include offset on the wheel size.

thanks

sledge_hammer