I think you should get the Lancer GT. Why?

It's more sporty, and thus you dont really need to fit some mods.

You said that you wanted to fit some 17" mags, why put 17" if the GT has 18" ?

Same engine....so I guess there will be no comparison about the FC.

IMO, I'd get the GT bec. it's rare, sporty and the modded look of the lancer. And oh, because of it's huge huge wheels ;)

And oh, one more thing, the ABS, air-bags etc etc. IS IMPORTANT. ( we dont know, you might use it in the future )