Bad idea/ Your setting yourself up to fail…2ft in length will be a foamy mess unless you can source and use very/very small diameter stainless line which is going to be real spendy, especially when you get done with fittings, elbows etc…I have never even heard of somebody proposing a plan with this specific restriction in mind also it would be awful tiresome to have each line so short/restricted that you can hardly even attach a line because it is too short.
Most commercial beers will be carbed anywhere from 2.3-2.8 volumes of CO2. For myself anyways I need between 6-10 ft of 3/16th narrow diameter beverage hose reflective of those pressures listed.
http://home-brewing.northernbrewer.com/ ... &view=grid
If you carb your homebrews to the same volumes typically 8ft would be a general length to use and is about how much I need in my system and I carb to 2.5-2.7 and also keep commercial sixtels on draft also through the same lines and see perfect pours each and every keg. Although each dispensing system is different and it all corresponds to balancing your own system.
When balancing the system typically the longer the line the slower/less foamy the pour. So lets say you don’t want to do the math, just start with 10ft on the first keg and then if the pour is too slow just hack off a half/foot until you hit the perfect length. Then use that same length for all the lines. Since your going to need around 50-60ft to accomplish the build, just find a vendor that sells 100ft wholesale rolls for a good price, otherwise your going to get robbed if buying the needed lengths at retail. Plus you’ll have extra for when the time arises to change a line completely.