Day 2 Wheels and Tires

[Damien]

Hi guys.
After looking around here for a bit, I am going to go down the day 2 road with my "69 Chevelle when it arrives to me here in Australia.
I am going to start with a set of 15" SS Cragar wheels. I think 15x4.5 for the front and maybe 15x8 for the rear.
I am thinking 15x8 for the rear as I would like a bit of sidewall bulge as opposed to the look of today with the rim the same width as the tire.
Given that it has the factory 12 bolt, I can get a 275 tire under it no problem. What does everyone think would be the best rear wheel option, 15x8 or should I look at the 15x10 with a wider tire again? I am just a little hesitant with the 10" rim and a bigger tire as I may have people in the back from time to time and don't want any rubbing concerns. Also can someone shed some light on available tire options that will give me the period correct look I am after? As for stance, I was thinking of lowering the rear of the car a little to give it that "nose in the air" look.
Just looking to get a head start on some things so I can hit the ground running when the car arrives.
Any help or opinions are greatly appreciated.