Re: You are the GM... Left Field
I'd platoon both LF and CF. In left, Alonso and Sappelt. In center, Heisey against RH (his splits, oddly, are much, much better that way) and Stubbs against LH (when he is actually pretty good).
That would enable you to direct your resources toward a top-end pitcher. (If somebody from the OF group has to be involved to get that done, so be it.)