aerayan welcome to the boards!
shame on you bad paper - its not an unusual request.
Aerayan - what books can you use?
you can start as a 6th Fav Soul/ ToT 4th - caster lvl 8
- your breath weapons start small, and you will only be able to breathe twice a day -
so metabreath feats are limited use - clinging breath seems the most useful if you want to emphasize the breath weapon.
Your con may be hurting because you need wis and chr for spell casting.
your caster level (8) is low. if you are planning on attack spells then you will need practiced spell caster, or spell penetration.
You could go a buffer route- ignore chr and avoid spells that allow saves.
take high str and con instead, and get weapon feats - focus, PA etc...
Its hard to twink, cause favored soul < cleric and Talon of Tiamat looses a lot of caster levels without getting a good BAB.
Hopefully others will have better ideas, good luck!
Hmm Barb1/Fav Soul5/ToT4 Rage to get con 19+ then quicken breath(from feat) use spells as buffs and healing only, ignore CHR - this might work, or at least be fun.