Thanks again for the replies.
I should maybe of mentioned in my original post that the project is an electric powered funfighter, a Kawasaki Hien from Cambria Models. Being a simple, low cost and fully sheeted build I thought it would be a good candidate to do my first fibreglass and paint job on. Not settled on a scheme for it yet, either scale or other.
I am going to invest in some spray equipment as I have a few other projects which I will be moving on to afterwards and for which I will be covering in a similar way (and a long wish list of scale projects after that !)
I have been looking at getting a compressor and airbrush, but am thinking that an airbrush is not going to cut it alone when you are spraying larger models and/or large single block colours. That, I would assume, would need a spray gun. What kind of setups are you running?