a spear knight is a really good start as well as Bowling Bash type..... but in all respect i think Spear is good when you're fighting players just for fun... if its on hard core WoE Aoi is right that BB is a best option.... and about your other question regarding farming... you should stick to high wizard or baby wizard for farming.... since LK has short range attack and even if it has an AoE attack such as BB... it only has limited cell range.... whereas high wizards has longer casting range and wider cell area damage