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Yep, all line to the bags come from the tanks and the nitro goes to the tank. Bridging the tanks give you 10 gallons of air to pull from no matter what switch you hit. Also prevents you from having to run two lines off your regulator. The dual valves are just to make it faster. Basically you now have 1’’ line filling your bag. I have ASCO 1/2’’ valves that I got from FMkustoms http://www.fmkustoms.com/store/index.php also got the valve brackets and mounted them to the angled bars in the front. I’ll takes some pics for you later. I haven’t really seen a difference in performance based on valves. Just don’t get anything less than ½’’ and never get a manifold valve setup. Pressure switch wont really matter but get a 200 PSI one just for when you need it. Keep the valves as close as you can to the bag. This will also make it faster and use less air. Not that big of a deal in the rear because its so light and not that far away. I probably have about 2-3 feet of line between my valve and bag in front, so when I hit the switch I only have to fill the small amount of line and the bag and the same when I drop it. I only loose the small amount.