actually it isnt that hard to level after 50. as long as you have decent defence and some AoEs you shouldnt have a problem soloing. therwise try finding a party to graind the rest of the way.
<(^_^<) ^(^_^)^ (>^_^)>
SapphireZero - 1441 MA Light Mage[9x]
0thello - 4141 WT Inventor[9x]
Phakyr - 4132 AP Warrior [14x]
Fujiku - 1144 WT Explorer[14x]
Tachikawa03 - 4114 HP CardMaster[13x]