Some unsolicited paladin musings...
There's a pretty good invis trick if you want to open up some more options. A Larrikan's mask can be recharged with a box of the void and a mana batteries from PoS. The box doesn't disappear so you can carry a good amount of charges with you. This gives you a fairly stable source of invis.
On that note HHK is an option if you don't mind trashing corrupt human faction—just gotta watch out for Issa, who's on the good human faction. You don't strictly need invis for HHK, but it's certainly convenient.
If I were you, I'd probably look into doing epic or nature's defender quest. They look fun and you'd get some good mileage out of the weapons before you upgrade.
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