Since you've got some experience with archery, I _guess_ a heavier bow wouldn't be much of a problem, except maybe when learning thumb draw. Drawing with a thumb ring does feel different. It didn't take me too long to learn. I just looked at instructional videos and pictures of thumb draw and started just drawing partially. Then it wasn't too hard to draw my 50# bow, and I was (and still am) a total noob.
For some people, thumb draw doesn't feel good at first, but for me it feels more natural than three fingers. If you're waiting for a ring/glove/etc, maybe you could try shooting the Kaya with your bare thumb to try it out? I didn't even try drawing bare thumbed until I borrowed someone's bow at a range when I didn't have a thumb ring with me... it was about 50# but the string was rather thick, so it didn't hurt much.
To learn to shoot well with thumb draw, you could just start by drawing partially, as demonstrated here https://www.youtube.com/watch?v=cFPssNiSvOg#t=2m20s
Just in case... It's really important that you nock your arrow above where the top of your bow hand is to avoid being cut by the fletchings. Then you won't even need a glove in the bow hand.