I do exactly what you are wanting to do. I train a powerlifting routine with a heavy strongman influence. My accessory work is all for my strongman but I do core lifts geared towards powerlifting. I do event training three times a week usually as a finisher to my workouts, last thing I do. I have a training log on this site that will showcase my latest training regiment. Obviously it focusses on certain events at a time as you cant train them all at once. I am increasing strength in every aspect, my core lifts to my strongman events it is working out awesome. You are never too weak to start strongman training, learning technique is everything. While you lift more than I do Im sure combined training will still benefit you alot.
ohh your dating my ex? cool. I'm eating a sandwich, do you want those left overs too?