Fastest alternative would be to combo the high value roulettes(preferably with a tank or healer friend along to get you the more friendly que times). A couple hours one night running through Leveling, Alliance, 50/60, and Frontline(with maybe Trials and MSQ tossed in) should be worth roughly a level and a half if im doing the math right(more then 2 if you clear the whole list). Just one night would probly be enough, because the exp you would get from the quests going forward should get you to 60 by the time you need it(i count 14 level 58 and 59 quests, one of which includes a dungeon). Best of luck!