NP Mjag, like some of the guys say, you have to get it right! at the beginning. It saves a lot of heartache when later you have to delete most of your hard work and start again because you got something wrong on the first day. I should know it happened to me
The crazy thing is the more you work on the A/C your profiling the more you have to delete previous work that your not happy with, because you want to get it looking as perfect as possible.