mixing ejuice

Hey, folks, I'm new to DIY mixing, and I have some questions. But first let me lay out the facts of my current situation (which I realise is not entirely ideal). My nicotine base is 30PG/70VG with 36mg/mL. I have a bottle of 30PG/70VG pre-mixed. (I realise I should buy these separate, but alas...

So the Radio Shacks in my area are going out of business and I figured this would be a good time to do a little weekend project. I decided to get some things to make myself a stir plate for mixing my recipes. A project box, fan, switches, wiring, etc. I figured if it was a failure I didn't lose...