Hi Stu
Pactra do an acrylic and solvent based range of colours
If the paints you have are solvent based then yes definately if you have to use them, as if solvent based is applied over waterbased paint it will react and bleed through
I would recommend you try and use waterbased paints like Createx and Faskolor as well as the other brands out there, as they are much easier to work with in my experience