The 3rd priority is center.
It might be a lot farther down than just 3rd. IMHO it might be as low as 4th,5th or 6th. I am not liking this Williams pickup for MLB. Personally I view him more as a disaster waiting to happen. Hey, maybe I will be wrong but old habits are hard to break. Then there is the issue of the DE situation with Izzy. I just see upgrades needed that potentially could demand attention before Center.
If you were to upgrade both OGs sufficiently I see no reason for drafting a Center high in the draft. OTOH this year does seem to be a good year to do it. With Barrett Jones dropping like a lead balloon I could easily see Emery risking #50 on him.