If you could get an indoor trainer you could try cycling after practice. Does your team have exercise bikes around the room or in the locker room, we always had them in the locker room for weight cutting purposes. I would just cycle after practice, it will help your wrestling too. I wrestled in high school and I use to run 5 miles after pratice or before school on the nights I had club practice. I think you are a little too worried, not a bad thing, you know what great shape wrestling leaves you in, plus your weight will be under control when racing season starts. It shouldn't take that long to convert your wrestling fitness into cycling fitness, plus your core muscles will be in tremendous shape from wrestling. Good luck in your wrestling!