Until the next Iron Banner the only way to get to level 30 is with Raid gear. However, even after the Iron Banner you will still have to have Raid gear to get to level 30. All of your armor has to be at +30 Light to hit level 30 and with the next Iron Banner you can have the following equipment: 1 Exotic (+30) & 2 Iron Banner (+60) armor items equipped at once. You will still be short 30 Light. So, you have to have at least one piece of Raid gear now instead of three.