Go to Toram Online Class Discussions, look at the class you want to know.. There are some builds there, where you can learn what combo they use..
Like J.D.X said, you can do Builder golem until 142 or you can do Zahhak machina hard until 143.. Either way it is kinda slow since xp per battle...
You're welcome.. oh im sorry i forgot, to fight Memecoleous you need to reach a part of main quest where you visited Dark Castle, sorry for that..
Maybe use Tyrant Mask NPC craft as additional gear to boost on damage.. They're kinda cheap now if you lucky you can get 1 with slot and just put...
Its too bad that i didnt have 2H char sorry :( but your build looks good, may i suggest to put 2 more point Crit so you get 5 crit rate and rest...
Hmm.. sorry cant point exactly which one but you can look at this forum on class disscussion.. My suggestion is you keep going on and leveling...
In my opinion katana, halberd then bow.. Maybe.. Try learn boss pattern and make a shorter combo that didnt ruin proration or make a combo that...
Boss that not included in main quest? There's Tapir, Memecoleous, Jade Raptor, Ruin Golem, Boss Goblin, B.B. Goblin, Forest Wolf, Astol, Forestia..