Recall Davey had a chance to juggle Zimmermann's schedule around the ASG to give him a littel extra time off and stretch further into the season but he did not. Davey really did not give Zimmermann any extra off time around days off and did not skip him. I suspect he'll do the same with Strasburg.
DJ has the authority to control JZ's schedule, historically Strasburg starts are determined by a higher authority. Guaranteed that Stras starts the home opener which will allow him to start three games in the first home stand, beyond that his schedule will maximize home dates and in particular home dates that would otherwise not be big draws.