I thought this tidbit from a recent twitter Q & A was interesting. Speaking about Swanson and Albies he said:
"They will both be playing SS everyday at levels TBD."
I think this makes a lot of sense. Keep them both at their position of maximum value until they show they can't play there at the major league level. It suggests to me that (barring some very unexpected developments in spring training) Swanson will go to AA and Albies to High A.
Our AA infield would probably be Swanson at short, Ruiz at third and Camargo at second.
At High A the infield would be Albies at short, Valenzuela (who we got from KC in the Jonny Gomes trade) at third and Obregon at second.