I didn't clay my motor because I didn't know to do so at the time. When the car was tuned, we ended up at +2 intake and -1 exhaust. We didn't want to move the cams more than a few degrees because we didn't know the limits. As it turns out, +2/-1 was perfect and we didn't want to work with any other settings.

CTR cams are pretty small, but an excellent cam. If you're going to use stock gears, you don't have anything to worry about. However, with as much compression as you're planning to run, a bigger cam would definitely be a benefit ... and a lot of fun. If you plan on using adj cam gears in the future, you'll definitely want to clay the motor now and write down the numbers. As I learned, it's better to plan far enough in advance so that what you're doing now works in the present and in the future if/when you change parts.