well, low rate is way too different than high rate. I mean some strategy MIGHT work, however, shall we go back on to topic.
Tk can cloak as well by using a sinx card, its not as good as sinx's cloak, but it is acceptable. Again, I understand you are some what new in this server, this server is ygg base server, meaning spamming yggs = everything, so decreasing sp by the sg skill is almost completely useless. As for damage output, no way in hell a tk can out damage a edp double dagger sinx (unless that sinx has failure gear and the sg has godly gear).
Since TK cannot wear a weapon, their damage output is lower than sg, however since SG lose the ability to use TK rank, they also lose their hp bonus, of course SG has the sun / moon / star skills but they won't work every woe.
Btw, the skill w/ gypsy and clown (Moonlit Water Mill) won't work in woe, it says in the skill description, no offense by saying that skill will work is telling me either you have never woe before (as a clown or gypsy), or don't have much woe experience. Loki's Veil is the skill they would use, since it disables all skills usage in a quite big area.