The temporary CF will be a wide open competition. Not sure it goes to Loperfido. I think backup CF on the bench is also wide open.
Lukes - older, still has 1 option but at at 30 years old the organization might give him a "make or break" chance to man the position for a month. He actually has the best offensive projections of all competitors.
Clase - the most prospect pedigree. one option year left. generally okay projections. switch hitter. sucked in AAA last year.
Loperfido - two options, so less urgency to get a look at him this year. struggled in his rookie season.
Straw - the best defensive option, with the worst offensive projections, but he's not on the 40 man so they have to punt somebody to put him on the team.
Berroa - the dark horse. two options left. switch hitter.
Realistically it will be a platoon. I kind of think they go with Lukes and someone else in a platoon.
Also, I think your projected bench needs someone with actual SS chops. FGDC has Leo Jimenez on it.