I think resource issues are a problem for most classes until you hit level 70ish. It seems that most builds start to really get fun from 70-80 range.

Unfortunately CL builds are very mana hungry. The only way I was able to level up (currently 65 and just switched to arc lash, btw) was using the aspect that gives you mana back if CL hits yourself and the aspect that can proc additional chain lightnings. The first one really only works on single targets so bosses were easy to take down but I had issues with crowds unless I popped unstable currents.

Having more max mana doesn't do too much to be honest, like others said, try to get the 2 aspects that helps with mana, one is the Recharging Aspect another is the one that gives you mana when you pop cool down, they will help. Then just try to stack resource reduction and cool down reduction.