Go for it, brother! The body is pretty resilient; I'm sure you're going to start seeing results pretty quickly, given your athletic history.
I'm a philosopher/personal trainer and I began a series of articles recently that you may find insightful and/or motivational. I don't get into specific workout plans or diets, but offer an overall perspective on training and personal improvement that can inform individual decisions.
If you want to check them out, I'll link them here. But in any case, I'm excited for you as you come out of your layoff; and try not to make the same mistake I do and debilitate yourself with soreness after the first one or two workouts! Hahaha
Having trained a lot in the past, your muscles will probably be able to handle a bit more than is good for them at the outset. I'll be following your journey - I wish you great success, and hope you take your body further than you ever have before! Have fun!
Thanks. Being in physical therapy, I'm both blessed and cursed with the knowledge on how muscles work, and how we always have more in us than what our body wants to let on. That can definitely work against me. I'll check your posts and see what I can incorporate into the routine.