how does this soil mix sound?

I have used f&f of for a while but each time I had a couple tiny problems due to it being so hot. this round starting in happy frog, trans to a mix of promix bx,F&F OF,and 1 cu ft happy frog "left overs",extra perlite,and a touch of lime I was going to go all promix but I have the happy frog and OF sitting here so I figure why not. GOOD or BAd? discuss...

Mix it in, it can't hurt. I always add vermiculite to my soil mixes. It improves the drainage of the soil but also holds moisture well so you get an extra day or two in between watering. Pro Mix has a lot of peat which can be a pain to get water into if it is real dry.
I think your mix is a great start!