Go west (left) on Giza Plains (dry) and you will get to a good place to level up on the Westersand. Full of Sleipninr, Urstrix and other stronger guys.

If that is too easy for you then teleport to Ozmone plains and level up there near the monsters that look like Behemoths and Sleipnir. You can also try "hit and run" peeks at Golmore jungle: Go in, kill some coeurls, get out before you are massacred.