Keep the paladin as hammers, and do 1 point into fanaticism, salvation, and redemption. That will cover all your needs for ubers.
Enigma first, but with that rune luck, just do some LKs for a few days and try to hit a few more Vex-Ber.
Grief will work best for ubers, but for budget, you can use fleshripper fanged knife too.
If you are invested in the sorc, hold out to make infinity first. Keep the Jah around for enigma later.