"sagit" is enough to get the correct system if you enter it into the galaxy map
also, time required will depend largely upon how much you durdle around getting there and back...I'm durdling around quite a bit on the way there, might not do so as much on the way back. Went through the Cat's Head Nebula and NGC 6357 on the way there did some sightseeing...
Currently approaching the halfway point now...
12k from Sol
14k from Sag A*