Hi Gene. To expand a bit on my earlier answer. As you probably know and understand, if your goal is overall fitness, then again, my answer would be “no” this is NOT enough. True “fitness” is comprised of FIVE elements (muscular strength, muscular endurance, cardiovascular conditioning, flexibility and body composition). The program that you describe in your question above does NOT address all of these components. So, if your goal is ‘GENERAL FITNESS,’ I would recommend – after seeking your physician’s approval of course – adding exercise that addresses ALL of the five components.
I hope that this helps.