It's pretty limited with only 16 levels right now. Still, the concept of a cleric and sorcerer character is appealing to me. I think it would have to have at least 11 levels of clr to get the Heal spell. I'm wondering if you would be better off with 13 levels to get Resurrection instead. Five levels of sor would get you Haste and Displacement though, which would be beneficial. I'm also wondering if you would want to go Drow, Elf or Human for this type of build.
Assuming it's a 32 point build, and you have +2 tomes for all stats, I was thinking starting out you would want 11 Dex for Mobile Spellcasting feat, and spend the rest on Wis and Cha. The idea I guess is to augment your healing capabilities with some arcane flexability. It wouldn't be good with mass heals, but unless you're in a raid, I hardly use them anyway.
So in the end, maybe 11clr/5scr or 13 clr/3 scr. What do you all think?