I have worked with some CP types but only one of them was a cyclist. He used a upright bike then an upright trike when his condition got worse. At 60 when I worked with him he had had to give up cycling. Get a refferal to a physical therapist who uses cycling as therapy. Randy Ice of the Severe Cardiac Outpatient Rehabilitation (SCOR) outfit was and still may be one. He did good work on my wife after her surgery and might be able to reffer you to the right PT people. THEN have the PT prescribe the right kind of bike/trike/recumbent for you. And set out a training program. Let an insurance company pay for a presecription bike .