Lightning based blaster build?

[Oramac]

Elemental Adept is often an expensive choice because 'casting a spell that the enemy doesn't resist' doesn't cost a feat, it just costs a spell known. Though if you're opting for a draconic sorcerer, perhaps you don't have many spells known to go around...
snip

And it's even worse with the Transmuted Spell metamagic, since you can just change the damage type to avoid the resistance in the first place (albeit for a SP cost).