When you say you "would love to be a functioning ambidextrous pitcher again", when were you last a functioning ambidextrous pitcher? Prior to the 13u injury? Were you recruited as an ambidextrous pitcher?
Perhaps not what you are looking for in terms of feedback, but why? I think most would agree that an ambidextrous pitcher is a novelty at best. As a RHP throwing 91 you have a tool that plays at a high level. Why take time away from developing that tool further to work on the left side?