Mullins would be perfect for this if he would hit to his career average. Once Holliday comes up, start him and Mullins 8-9. Once Holliday hits, he can be the leadoff hitter of the future with Adley and Gunnar 2-3.
A 9-1-2 of Mullins-Holliday-Gunnar would be pretty nice.
I agree, Gunnar has to be 1 or 2. Every spot you move him down reduces his predicted AB's by 11% and we don't want that. Better to have him hit more times even if it costs a few base runners than more baserunners/fewer ABs.