I think Strome is the best centre on the roster for Leonard, who will do best with a smart playmaker next to him, and Strome himself could use a straight-line skater to help push things forward. Eller isn't that.
At the same time, you can't reduce Wilson and Protas's ice time by putting them with Eller. They're too important for that. They need to be stapled into the top-six.
That leaves McMichael moving down with Eller, but I think to get the most out of McMichael you want him with a possession centre like Dubois who can get the puck from one end to the other, since he isn't the type of player to do that himself.
So, I think you put Leonard with Eller to start, leave the top-six as is, and use the remaining games to reassess if need be...