I play a TR'ed 18/2 FvS/Monk caster build (first life: pure Cleric) which is a lot of fun. Basically the survivability and is even better than that of a Clonk (FvS has a better Reflex Save which goes nicely with Evasion and has the stacking elemental resists). In addition you do not have to worry about spellpoints and you even get wings and the full 3 Tiers of the PrE when they are out. Of course you have fewer spells available but that is not an issue with the current choice of spells. The other downside is that you have to craft or buy special weapons to be able to run around centered (i have 2 greensteel kamas and a SupPotVI Kama). I can only advise you to try it.
Fire