Craig, what "system" OF nmf you going to use?
I prefere Alclad 2 paints as they are real easy to use.
The absolute biggers thing with them is to have a flawless finnish on the model before using.
I will prime the model with tamiya primer, sand it with 8000 micro mesh , then spray on gloss black enamel as a base.
I have not had any luck with alclad's black primer. Then you start shoting on the alclad you want ot go with. It is so thin that initially it looks like nothing is going on, but it takes about 6 very light coats to get a nice finish.
Then I decal straight onto the paint as it is so smooth, then seal it all with alcla's clearcoat as it does not affect the look of the metal really.
Spray the alclad at between 12-15psi at a low angle to the model, this way you get a wider cover area.
Hope it helps.
Theuns