What are the best skill(s) to put points in for, and what's more effective ee robes or dex? (Going with staffs)

I would aim for Dex robes. EE can help to a certain extent if you are soloing a lot or in a game full of robed characters (someone's gotta tank) but Dex will also serve you well.

Doublestrike / Crossstrike are pretty sexy abilities. Double can hit one monster twice if there is only one left (great for EP/Sneaky) and Cross does real nice damage and can wipe out a good number of mobs.

Might want to put 5-10 to VIT at start to help his HP pool some, but then max Dex.

I'd add 3 points double, 3 points crosss and rest in multistrike