Etheric Light isn't the only way to level up. Do the 32 Prison, find people on the forums or a clan to help you out. Collect the Armor Cores and turn them in for 42 Light armor pieces. Get to 33/34 and run the 34 Prison. Get the Light and start your collection there. I did that and got my first character to 34 in about 2 weeks as a casual player. It's much less if you run Trials with a clan as well. I think you get at least 2 EL from the different tier packages.