Right now, your ability to solo in FFXIV is largely dependent on a few factors:

1. Your rank vs. the target's rank, since level correction outweighs all other factors in damage output and damage intake.
2. Your selection of important crossclass abilities, like Sentinel, Cure III/Sacrifice III, Shock Spikes, etc.

That being said, you can still do a lot with proper use of Close Shot / Shadowbind. Try starting with Queen Bolete, a funguar NM that also happens to drop Eternal Shade, one of the best body pieces for ARC at this point in time (if you don't have it already). It might help to wait until 34, since that's not too far away and you'll learn Barrage, a fairly decent TP dump WS.