Rogue newbie-how to outfit with 1500plat?

[nwin]

Started playing with some friends in a guild and they were nice enough to give me some starter cash, plus I've been selling orc scalps like mad.

I have a jagged chokidai spine and some other random things like iksar hide gloves and one serp bracer.

Where can I get the most bang for my buck? About to hit 13 so will need to start thinking about an offhand as well.