on a 40 hour a week working schedule. I made it to 50 in probably 3 or 4 weeks, playing 2-3 hours a night on weekdays, 4-6 hrs on weekends. I just stuck to the story line. and class missions. and when I had trouble I just threw in some pvp warzones and space missions to help the leveling. I did nothing that required a group other than warzones
did not take long at all. considering this is the first mmo that ive stuck with. I tried WoW, I got to level 36 and gave up.