I have heard complaints about Tokiko shocks. I am not saying they are bad - just that I have heard peole complain about them while I have never herad anything negative about KYB.
FYI - AGX=adjustable, GR2=nonadjustable
I have the prokits with AGX and I am very happy with the set up. With 18's you might want a lower drop than the prokit. Check out the sportlines. If you go with the sportlines you will probably want something better than the GR-2's
I would also look into the saggy butt issue further cause with the prokit the rear is a hair lower in the back than in the front on my 94 ex sedan.
What is the weight difference btwn the sedan and wagon?