Sounds like a good schedule how many whores do you estimate for cardio in between the selected dates?
It's not about how many whores, it's about how much time you spend fucking.
I got one really good one right now who lets me fuck the hell out of her 4 or 5 times per week, over an hour per session. She sucks dick REALLY well too and she is an animal in bed, especially when she gets drunk. If I give her a few beers she will suck on my balls forever.