Not with less than 10 overs. The only rule when bowling less than 10 overs is that no-one can more than two. So we could use just three bowlers if we want.
I'm the opposite with Dawson. Depending on the match-up, I'd be open to him bowling an over (or two).
One more good over should be enough. Because something in the region of 65 to 68 from 4 overs would be very tough.