Hi Lem, sorry to hear that you have this injury it’s frustrating I know from experience of various injuries! I think personally learning to play with pips is quite a big change from what you’re used to and not ideal for sure.
In terms of learning to play with the opposite hand that’s not easy, it can be done up to a point but it’s very difficult unless done when young to reach close to the same level with your opposite hand. So unfortunately my advice would probably be to try and fully heal the shoulder/bicep whichever the best route the surgeon thinks that is. Probably not what you wanted to hear but I’d say you’d be better off trying to heal it totally and build your way slowly back into your usual playing style.