Brent, you have plenty of bow for the species you mentioned. If you are going to bump up your arrow weight, you may have to use a different shaft. Grizzly sticks are great, as well as arrow dynamics. I would not hesitate to use either bow, I would just get a heavier arrow. On my first trip over, I shot a 52lb. recurve, and used 700 grain grizzly sticks. Had no problems whatsoever, even on Kudu.