I have a gas line that is stubbed out under an outdoor kitchen I recently built. I had a gas guy over the other day doing some other work and he got his boss to quote me hooking these grills up. Quoted me $1,670 which seems ridiculous. Is this something I could do myself? Seems like I just need 3 flex lines and something to T-out from the stub to the 3 flex lines no? There are 3 gas powered appliances: grill, power burner and griddle, but just a single stub. The feeder line is 1" pipe.