I proposed this idea with Bautista in mind but it absolutely works for Pearce as well.
1B - Pearce takes the majority of starts against LHP, Smoak and Morales split the starts against RHP.
LF - Pearce against RHP (with Carerra taking the odd start), Upton vs LHP.
DH - Majority of games to Morales but the 30+ starts he has at 1B allow for other vets to DH on off days (Martin, Tulo, Donaldson etc)
I won't post an estimate of how many games they'd each play because last time I think it gave BBBB an ulcer.