Hey Catlord interesting mix I am trying similar mixes. I think you really should add sprays of P79 as you go through the day (10 mcg maybe every hour and a half). P79 on my skin does not last longer than 2 hours in my opinion. On the other hand, Instant Female Magic lasts all day and more for me (I had some hits 19 hours including sleep after application of this one last week). IS and Instant Openness will last you 4-6 hours I think. When you mix them like this you will have a completelky different mix in 3 hours for example.
I’d be interested in what you see with P79-it is quite new and a pretty unknown product after all.