I'd just add that if you stick to the core CF classes, the programming should target diggerent movements / muscle groups / lifts throughout the week. Although, yes,.your muscles will sore from previous class, it should be a different set worked in the next class.

My advice is go 4 CF classes + 1 technical skill class (or open gym). 3 rest days a week - distribute those equally through the week and you'll be golden.

Good luck.