You are right about that, everything you do from now has to evolve around how comfortable your knee is feeling. This could be frustrating at times but it will get better with time, just be patient and do it gradually; too fast too soon may cause more harm. As far as cardio I would have to say what you have outlined is plenty in my opinion, I'm the type that believes in less cardio and more on diet to lean out. For me cardio works best when BF is higher ie 12% but once you start to get to single digits I feel like I start to lose more lean mass so I eliminate cardio all together and cut calories a little bit more with timed re-feeds. Also if walking inclined doesn't hurt your knee go for it but if it does go for the Elliptical as it is a very low impact machine. Also you might want to consider adding some GH to your regimen, I think you'll reap 2 great benefits from it: It works great with fasted cardio and will help speed up your knees recovery. keep us updated.