I think you should go with Alexander & Jones.
Alexander does not have much left in the tank but the week off and going against an abhorrent defense should see him put up 100 & a touch. I think Jones will keep up his recent solid play against a terrible run D.
White has been solid of late but I do not think he will do as well as Alexander & Jones. I don't think Lewis will do all that much as Cleveland will probably throw a lot since they have been doing it so well of late, no reason to try and establush the run if they can get it done through the air so effectively. I can also see Seattle jumping out to an early lead and Cleveland will be playing catch up most of the day through the air.
Good luck no matter who you decide to start.