tons of folks planned ahead and saved all every daily public event reward, worked each faction right up to, but not past, their next level so they could get a package which likely had legendary items, plus they saved a full list of high exp bounties. Pop all these in the first few minutes of TTK day 1 plus top it off with a Red Bull buff (still pissed that two of the four cans I bought didn't work because of hackers) and you're an instant level 39-40. If you're not at 40 then a few missions is all you'll need. then you put on the legendary gear and have a light level above 220. Easy, and best of all you still have all the content ahead of you to enjoy.