Duran is fulltime CFer. Rafaela? I'm using him as a super UTIL guy CF/RF/2B/SS. It's not the perfect use for him, but in this situation, it's what we have to work with.
I sign Matt Duffy as a cheap FA to start the season at 3B (can also backup 1B RHB). Story starts the year at SS. Mayer, Meidroth and Campbell have to work out at 2B/3B/SS and you see who gets called up first and who slides in where. I'd give Mayer and Campbell reps at 2B and 3B in AAA before calling them up.
Campbell 2B and Mayer 3B may make most sense in theory with Meidroth on the bench? IDK.