Reddit mentions of Pro Tie 33200 SAE Size 4 Range 1/4-Inch-5/8-Inch Mini All Stainless Hose Clamp, 10-Pack

As noidios said the kegs are going to cost more unless you get a good deal from someone. My local store has the pin locks for $65 each.

Co2 tank sounds about right. You may need to have it filled though depending on how the store sells them. I would consider a bigger tank or a spare as you don't want to run out of Co2. 1 5lb can dispense roughly 6-8 kegs and that is if you don't have a leak. Some kegs can leek. Seeing as how they are all connected and will equalize in pressure one leak going unnoticed for a night can cost you the tank and the pressure in all your attached kegs.

Manifolds is dead on on price.

50ft of 5/16 at $50. maybe shop around on that one. If you know your PSI you can check out This I wouldn't think you would exceed 50 PSI under normal conditions.

Hose Clamps since you are going to be going off of the OD it should work as the OD of the smalles tube is 5/16. Figure you will need 4 for each keg (2 on each end of the line) plus 2 for the line going from the manifold to the tank should be about 34 (assuming 8 kegs.) so 4 orders comes to $$20

3/16 for beer line. I would look at this 100ft A bit more cost effective. Others can chime in on them if I linked a bad product.

Keg Lube save a couple bucks for 4 oz vs the normal 1 oz. Easier to dispense and keep clean imo.

Places where I would spend a little more:

Shanks are up to you but I would go the extra stop for stainless if you can just so you don't have to worry about chrome flaking off a few years from now.

Handles - for the price I take it you are looking at the cheap ones from northern brewer? Can't speak for them for myself but I think they will work. worst comes to worse you replace them a year later.

Edit: Also the kit you listed 1 4 way manifold (say $50 for rounding), 4 bev locks, 4 gas locks (6.50 ea so $52) the faucests look like the cheap chrome ones from amazon $31 ea ($124), 3 feet of gas line with 2 clamps and a faucet wrench aren't worth much. $250 for the kit they are selling for $382 unless I missed something. + dual reg at say $98 but $50 for the regulator. so about $280 in parts that they are charging you $382 for. unless I missed something else

thieves are creatures of opportunity. It doesn't really matter what your bike's made of. What matters is how much of a pain in effort and time you can make it to steal. So it really comes down to a simple list of things:

• Two thick cables, one or even two D-locks. Kryptonite D-locks can even come with insurance policies that, when the lock is found to be insufficient and at fault, may recoup you up to ($-american)500. Attach the D-lock directly to your frame and something big and sturdy and metal. Thread the cables through your wheels and around frame and lock them securely either to the same thing as your D-lock, or through your D-lock
  
  `the D-lock is not just a big padlock that connects the two ends of a cable. It has to be around your frame and around a secure object at the same time. Please do not make this mistake!
  
  
• Lock your bike where you can see it at all times, if possible. If not, lock it where thieves have to really expose themselves as thieves. If you can take your bike inside with you, then do it.
  
  
• You can do smaller things, such as gluing steel ball bearings (metal beads) in various screw heads.
  Or custom-ordering screws that require a pentagon-shaped screw tip to turn, that's a rare tool thieves are unlikely to have. You'll have to order the tool, of course.
  hose clamps locking down the quick-release levers of your wheel hubs.
  
  here is Hal grading people's lock jobs. Follow his advice.

Sorry I was on my phone before. let me see what i can find. I can't find the exact coupler I used but I might be able to find something else with some searching

ed: you're in luck, found a two step way using items available on amazon that connects to the 1/4" flare you originally tried to shove the hose directly onto. when i got my oven in, i needed it working THAT DAY, and the local hvac supply place didn't have 1/4" flare swivel couplers in stock.

http://www.amazon.com/LASCO-17-5911-4-Inch-Female-Adapter/dp/B008E5CVKA/ref=sr_1_1?ie=UTF8&qid=1419741989&sr=8-1&keywords=1%2F4+inch+female+flare+swivel

http://www.amazon.com/dp/B006PKL6Z2/ref=biss_dp_t_asn

You may also want a hose clamp or two to go with that

http://www.amazon.com/Pro-Tie-33200-4-Inch-5-Stainless/dp/B006IOZ3YU/ref=sr_1_1?s=industrial&ie=UTF8&qid=1419742116&sr=1-1&keywords=1%2F4%22+hose+clamp

when i did it locally, i found a 1/2" Flare to 1/2" NPT swivel, and had to get some teflon tape and put a 1/2" NPT x 1/4" barb on it instead.