Changing Favored Class and tweaking the PH2 Knight

[Griffith Dragonlake]

1. In a metagame sense, is it safe to change the Elf's favored class from Wizard to Sorcerer? The only drawback I can foresee is forcing players to beef up what is generally considered to be a dump stat. The rationale is that I conceive the elves to have a more 'intuitive' approach to magic whereas humans and more 'power-conscious' races would be more 'analytical'.

I did this in Grymwurld™. Just make sure you give your Grey Elves a +2 Cha bonus instead of Int.