Ostarine would be very beneficial for you in terms of recovery from the injury and recovery after working out. However, it is not the best choice for leaning out, and you should instead use Cardarine GW for that purpose. In the stack you are thinking of, 25 mgs of Ostarine coupled with 20 mgs of Cardarine GW every day will do wonders for you. As for the vision sides of Andarine S4, they are greatly overplayed. First of all, they are easy to avoid if you do proper dosing protocols. Secondly, the vision side effect will disappear just a few days after stopping the use of Andarine.