I would get supplies onlineif you can. I just bought 200gallons of salt mix for $47 with free shipping. For the rock I would get some cheap base rock from one of our sponsor sites, like reefcleaners for $2 a lb and buy a few lbs of LR
from your LFS
, or local store. I bought some LR
from petco, and while I got a huge chunk of it for cheap it had die off on it for days and days...
Where are you looking to get the cube from? I bet I could find you a cheaper price. I paid $249 for my cube with free shipping and a $30 gift card to use towards fish.