Your Ring&Earring are probably why you are getting kicked from dungeons... Try to get Skybreak Spire Ring and Earring asap. Anyone would take your with them to dungeon, just stand next to entrance and look at region chat. Also, you are gunner. Your HM points aren't properly distributed - you should use 51 in offense, 25 in hm focus. Your gems are horrible and you don't have soul badge yet - try to get one from current tower of infinity.
As a way to upgrade your AP - you have it pretty easy at this point. You should do Heaven's Mandate and Cold Storage everyday and collect Feathers. You can exchange them with merchant at Cold Storage to get Unity Stones (CTRL+H) - try to fill your blue unity stones (you'll get more slots as you get higher unity level). You'll also get passive AP for each 10 Unity Levels.