Sorcerer Heritage feats--too good, sorely needed, both, or neither?

[Remathilis]

I've just started a sorc5/dragonheart mage10 (basically, a PrC that gives draconic heritage feats) and I'm loving it. I can't tell if its too powerful, but the draconic feats give my sorcerer some much needed options (breath attack, bonus hp, energy resistance, quick save boost, extra spells, etc) that allow him some nice buff/utlilty magic as well.