Augment Summoning is also listed in Tome and Blood, in case one's DM doesn't like using FR material.
As for
Bloodline of Fire -- consider also getting
Elemental Substitution: Fire (T&B). That extends your innate benefits (from the
Bloodline feat) to
every elemental-damage-descriptor spell you have!
Melf's Acid Arrow ... ? No,
Melf's Fiery Napalm Arrow ... ! Not even a human can get both
Bloodline and
Substitution at first level, since you need to know another metamagic before you can learn
Substitution, so that would be a goal for 3d or 6th level (depending on if someone is, respectively, human or not human).
Other good races for Sorceror would be Aasimar (either in the FRCS, or interpolated from the DMG and MM) for their +2 Charisma; anything Half-Celestial, for the +4 Charisma; or, in sufficiently-levelled campaigns, a Unicorn, for the
+14 (!!!) Charisma). By literal rules, the Unicorn would have to cast Still spells constantly.
However, by reasonable rules -- playing in the *spirit* of the rules, rather than solely by the absolute letter -- since Unicorns are sentient and (according to the DMG) suitable PC material in the right campaign, IMO they would have unicorn-specific means of dealign with somatic components (a little jig on all four hooves; drawing a glowing, possibly complex sigil or glyph in the air with their horn, etc). And for them, a form with HANDS ... woudl be akin to a human spellcaster being changed into a dog: no more spellcasting.
