52 is really big for the rear. Ho with the 18 in the front and something like 45 in the back. With that circuit pipe and that kit, you should get moving pretty quick as long as you have tuned up your clutch. That is where real quickness lies.
Break in period is done while idling on the kickstand. If you dont have a temp gauge, get one. Idle the bike for 10min once it gets to normal running temps. If you cant idle your bike on the stand, then that is a problem to fix. This really helps eliminate any air leaks before you get on and rip around. After the 10 minutes, kill the bike. Re-torque the head down in case anything loosened up. Also double check the intake and exhaust bolts. Repeat this process 3 to 5 times in total. After this you can start the tuning of the carb, confident that you dont have any airleak around the cyl. Just be careful if you take the carb off and put it back, you dont create an air leak there.