YES! If you can afford it, buy Perlicks or Ventmatics from the get-go! Standard beer faucets are just a PITA to keep running, especially if you use them for 1 or 2 pints a night. They stick really badly, whereas the Perlicks work like a DREAM.
Superior Products has them cheap, they come out to about $40 with shipping each faucet. http://www.superprod.com/
Also, 6" might be excessively long, it depends on your particular fridge. I think my shanks are 4.5".