Sounds like a good plan. Have a look at that range of metallics from AK Interactive (Geo posted a review showing them in use some time back).
They look very good indeed, and can be sprayed over a 'normal' primer, so don't need any special preparation. I reckon a rub down, then a smooth primer coat, and with the AK paints you should get a good finish.
I'm going to try them on my next NMF model, and Model Hobbies stock them all.