I'm buying new wheelse... 10's or 12's and why?

Hello,

I have a stock Club Car DS with a back seat. I am buying new wheels/tires and I THINK I can go with certain 12" models - but I'm wondering if I should. I primarily drive on the road/gravel trail to our beach, but I often carry 4 people (sometime plus a couple kids). I have the upgraded suspension in the back and a flip over seat/utility bed. Any feedback?

The other thing I was considering was buying the Medusa wheels and getting 10" wheels for the front but 12" wheels for the back - plenty of clearance back there with the upgraded suspension.

Any tips for a total newbie?

Thanks