For pathfinder why not use the earth elemental bloodline for sorcerer ? It specializes you with earth elemental abilities and grants you spells that turn you into an earth elemental. You can use the bedrock variant if you want a bit more defensive focus. You won't find much more specialized then that in pathfinder/3.5, at least not without some serious rulebook searching. You could try the Oread race but I wouldn't recommend it for a sorcerer (-2 charisma) but it's doable. Having played 3.5 for years I'd recommend against it if Pathfinder is an option. Pathfinder classes are superior in just about every way to 3.5 classes. The only way to really make a 3.5 character that compares to a Pathfinder base class is to cheese one of the numerous overpowered prestige-class combinations (like my Rog3/Spellthief1/Ninja1/Invisible Blade5/Assassin9/Shadow Thief of Amn1 with 13d6 sneak attack/sudden strike, feint as a free action, evasion, death attack, improved uncanny dodge, hide in plain sight, 4th level spells, AC 74, reflex saves +30, and 4 attacks per round against targets denied their dex bonus to AC). It's a bit harder to cheese in Pathfinder but not impossible. Still better than 3.0 with a 3rd level spell that was stronger than 9th level spells ( haste vs. foresight , although I suppose you could still make that argument) and immortal monsters (constructs with regeneration against all damage types...regeneration turned all damage to subdual, and constructs were immune to subdual damage). And all this without discussing psionics =). I digress. Hope that helps!
