EQ tapers out of your system at approx. 3wks(17-21 days) Thats where the "start clomid 3wks after last inject" statment comes from
Fina and Prop will taper out in roughly 2 days. I usually advocate a start for post cycle therapy for Prop 2 days after last shot; with Fina I usually go for 3 days(depending on if other compounds are stacked with it)

To match up the half life better to the EQ, run the Fina/Prop 17 days past the EQ, and then start clomid 2-3 days after last Fina/Prop injection. That way the EQ will be at the end of the 3wk half life and the Fina/Prop will leaving the system at roughly the same time which at that point you'll be starting clomid 3wks after last EQ injection and 2 days after the short acting AS