If you sign Ramon Urias to platoon w/ Hamilton to start the year you have pretty good coverage until one of the young guys are ready.
Urias vs LHP (2y split) - .275/.328/.782
Hamilton vs RHP (2y split) - .235/.295/.686
If you take Hamilton out of Fenway vs RHP - ,261/.315/.789
Conservative platoon split would look like .250/.300/.720. That would be at least serviceable.