You're fine, not many problems. A few overleveled skills isn't a big deal (but many overleveled skills is)
Keep following the build but watch the skill's next level for increase in cooldown. Never let your skills' cooldown increase. (Unless it is necessary for powerful skills. The exception to this rule is Pillars of Fire.)
Edit: I got some new info:
Level Fire Mastery until you need Wall of Fire to be upgraded. Then just keep it there, don't level Wall of Fire.
Fire of Fury is an option to max, it's easy to execute but may leave you open from my experience.
Max Ice Blade (optional, not recommended in my opinion), Ice Crystal, Freeze
Lv1 Ice Burst
Pillar of Light may be optionally maxed, but I recommend saving the SP until your late levels to decide about the investment.
This is from another person and I haven't tried maxing said skills yet, so save your SP by keeping them at low levels then decide for investment later.
Last edited by PKShota; 05-20-2012 at 06:51 PM.