IMO, don't get 305s. If the tire sticks out at all it doesn't look very good. My stock wheels are 6.5in
and my old tires bulged a little bit and didn't look good.
Do you have a need for the 305s? Besides stance? You shouldn't be able to tell the difference between a 295 and 305. Even as far as handling is concerned; it will be neglegible.
I'm hearing people like the stock tires, why not just get those in 295s?