Could be wrong but I suspect we will see a lot of zone coverage when the big 3 are on the field together. It will be like playing russian roulette to man them up often.
This is why NCSU will be such a great test for Bray. They will play almost exclusively zone, making Tyler's reads absolutely crucial. Guys will be open, and it's just a matter of whether he can find them in a timely fashion and not overlook defenders and make mistakes.
I don't think we will see many 8 men in the box either even if just 2 are on the field. I know some coaches will blitz regardless but I think that is a huge gamble against the big 3 or at least a larger gamble than normal.
I think we will see blitzes on passing downs, but I agree that it won't be common to see 8 in the box-- at least until we show we can run the ball against 7. Even then it would be pretty risky.