Marshall is an excellent fielder at 3b, I would be hesitant to move him. Heyer will be somewhere because of his bat, play the OF even at times.
There is also Bellini and I Lewis, who could get a shot. The LSU transfer is a possibility at SS, and Black, the juco whose brother played against us for Ohio U, is a talented infielder.
Brayden Combs who RS, and T J Collett are 1b possibilities, both have great potential
I could see this. Whoever plays 2nd will have to be at least serviceable with their glove and be able to hit well. Dawson (SS) didn't tear it up at the plate at JUCO or LSU, but he is very good defensively.
How about Black, whose brother played for Ohio. He seems to have both glove and bat, at least in juco ball.