New to the board... Need some advice please

[Rust hole]

Hello all, I'm new to the suburban life! I've been busy getting my 72 back on the road and need some advice to finish it up( for now). I need to recover the seats and was looking for some input on the covers. Who has the most correct ones? Did the suburb and come with the "hounds tooth" seats? Mine look like they have a different pattern.

Also, I'm looking at lowering 2 1/2 front and 3 in the back. I'll use spindles up front but what's best out back, springs or blocks?

Any help is appreciated, thanks Damon