What stuff do you have? What armor duals and jewels?
If you have good armor get an SE friend and get some haste 2 pots and go hit up the catacomb near Oren ( i think thast your level ) if the oren one is to high go hit up the one thats near Giran Harbor. There are some p.def weak mobs in the back that will hook you some pwnage xp.
Find a Battle Prophet and head to EV. As soon as you can head up top to the Elders. If memory serves, they are all weak pdef. You'll be able to stay there until you're 58 (ish).
BD and SE make a very good combo. And who said an SE can't do damage anyhow? Might not do as much as a real DD but don't let em get away with buffing and throwing you a heal every 5 mins, make em get stuck in there lol
wc would be best option since he has all essecial buffs plus he has things like heavy armor masteries, heal and sleep so he can always ehlp you(not only in dmg, but in crowd control if you get overswamped by respawn)
wv all the way!
BD+WC is probably the best duo (without any outside buffers)
you will killed faster then any other combo prolly, cuz the WC can help fighting.
Thats what I would do at least