Undercurrent DWC Shopping List...

So I've been playing around with the idea of starting an undercurrent system...two, to be precise. Eventually I would like to have two 8 pot undercurrent systems running next to each other, but for now I'm trying to set up a shopping list for two 6 pot systems...Just trying to put a list together to make sure I have my head straight, since I smoke weed like it's my religion and am rarely sober. Not that I cant function, I'm just forgetful, hence the list.

The List

14 Reservoirs, preferably 8 gallons-ish, with lids
28 2" Uniseals...Contacted a guy on craigslist about buying 28 brand new 2" uniseals, offered 45 bucks, we'll see what he comes back with.
Schedule40 PVC, 2", probably aroud 30 feet or so
8 2" PVC elbow fittings
2 2" x 1" "T" fittings
2 1" "T" fittings
2 1" ball valves
15-20 feet of 1" or 3/4" tubing
2 Return pumps, around 600GPH each
2 Float valves
1 55 gallon freshwater reservoir, or directly connected RO/DI Unit or Tallboy filter
Airline Tubing
14 Airstones
1 Badass Industrial air pump, or 2 regular industrial aip pumps
12 Five or Six inch netpots
50L Hydroton
Possibly a chiller down the line, depending on room temps.

I dunno, am I missing anything here? I'm gonna be collecting these bits and pieces over the course of weeks, if not months. I'm just tired of lugging around 9 five gallon buckets a week to do water changes in my DWC grow...I'm sure a simple RDWC would be easier and cheaper, but I feel more comfortable with Undercurrent.

Thanks for reading guys!

14 Reservoirs, preferably 8 gallons-ish, with lids $70
28 2" Uniseals...Contacted a guy on craigslist about buying 28 brand new 2" uniseals, offered 45 bucks, we'll see what he comes back with. $60
Schedule40 PVC, 2", probably aroud 30 feet or so $36
8 2" PVC elbow fittings $12
2 2" x 1" "T" fittings $4
2 1" "T" fittings $2
2 1" ball valves $2
15-20 feet of 1" or 3/4" tubing $25
2 Return pumps, around 600GPH each $120
2 Float valves $10
1 55 gallon freshwater reservoir, or directly connected RO/DI Unit or Tallboy filter $100
Airline Tubing $8
14 Airstones $28
1 Badass Industrial air pump, or 2 regular industrial air pumps $70
12 Five or Six inch netpots $12
50L Hydroton $40
Possibly a chiller down the line, depending on room temps. $300 Not added to total

Guesstimation on price leaves me at around 600 bucks to build 2 individual six pot systems...I was at my local hydro store today, and for a 4 pot UC system they were asking around 900. I'm hoping I can do it for less than 600, depending on what I get the materials for.

Funny, I talked to the guy on eBay about the uniseals, he wants 70 bucks for 28, not a bad guesstimation on my part last night...lol...trying to get him down a little lower still...

Your air pumps for 2 systems will be more than $70 =) Its $70 for a 75-ish litre/minute air pump w/8 outlet manifold.

http://www.amazon.com/Active-Air-Commercial-Pump-outlets/dp/B002JPPFJ0/ref=sr_1_6?ie=UTF8&qid=1336444503&sr=8-6

110 liters per minute, $84 free shipping, 12 outlets...I already have pumps to aerate the control buckets, too