FYI,

For a model like this I would use Testor's Model Master's acrylic and airbrush the whole model, the coverage is excellent and very light weight, not to mention it won't kill you. The F-18 FS colors are already available in Testo'r catalogue.

Then for the Clear, any high-end would do, just make it dead flat.

Really, no need to use PPG or Imron or Centari to get excellent results on a scale model. I would only use that type of paint for sporty looking-high gloss Bandits and such.

My 2 pesos.