I don't have any experience with that specific combination, but it should not be a problem at all. I have sprayed Tamiya acrylics over regular MM acrylics many times with no problem.
As to thinning, if it sprays properly at the pressure you want to use it doesn't need to be thinned. If it won't then add some thinner. I've never tried that primer so I don't know how it behaves right from the bottle.