im level 108 Force Blader Transcender / G.Master
and 78 Force Shielder Completer/Completer
Dont worry about leveling, skill up..best way to get good fast.
And no, it really isnt quests if you dont want to, my force shielder has only done story quests and rank up quests as they are the only ones actually needed to get certain things (Honor rank ups etc and more HP and attk...) So you really can grind as long as you do the quests needed at some point
=)