Where do you get your spell power and charisma from?

[lvl20wizzyman]

After coming back from a long year or so break I've missed a few updates that would make me even more undergeared. My main concerns are Charisma, and spell power, and SP lastly. In my ED (Draconic Incarnation) i've taken 2 Charisma and that puts me at 34 I don't plan on taking anymore, but as a WF sorcerer I only loose 2 charisma points, my goal is to be standing at 40charisma at all times, right now i only have a +6 Cha item and the water savant set (is that even worth the 2 caster levels it gives anymore?) My charisma break down is 21base +5 feat +6 enchantment and finally a +2 from tome = 34 Where would i hunt down my +7 or +8 item? and where would i place my exceptional +1 +2 or the +3 one? My Sp is also standing at 3198 with archmage item And my hp is at 519 (30 con) with 20base+2tome+2feat and +6item=30 whats the highest con i could achieve? 34 or 36 doesn't seem too bad to break 600 hp witch i think would be plenty I also have access to litany of the dead^^