Hey Dave,
Welcome to the Gang, lots of good people about. My first "trad" bow was also a PSE Kudu, a 55#er. I still have it too. It's a pretty decent beginner bow, mine shoots a heavy arrow with authority.
I would imagine that you could have some one make you some hybrid limbs. The riser design is pretty simple and straight forward as far as 3pc. takedowns go. There are quite a few bow builders who hang out here (I'm not one), and I'm sure some one will peek in and give you a better idea of what's involved. Again, welcome to the Gang.
Shane