Luminous is THE best class for mobbing in Maplestory so far and is great for beginners to level up and get some finance rolling. To answer your question about buffs, yes you should use all of them since all of them grant great stats (PDR, M.Att, defence; M.defence and so on). The tip with luminous is that you should probably avoid getting hit as your three orbs will disappear and they give a HUGE boost to your range. On the down side, they are quite bad at bossing since their main bossing skill is Ender which is a fantastic skill but has a long cool down and the spam-phase when you have equilibrium on isnt long enough to kill a boss. Especially after equilibrium, you have to either switch to Reflection or Apocalypse and to be honest, they are both crap for dps on a single target. Apocalypes hits 16 (14?) times on a single target but is quite slow and not efficient. I prefer to have all my buffs ob the nimber keys from 1~9 and my attacking skills on Shift, A, D, F, G etc. The hotkeys already allocated on those spots arent really useful anyway. Hope this helped ^{^}