The price tag may be a little daunting for a newcommer, but an airbrush will be the best investment you can make if you're serious about modeling.
And airbrushing red paint over a black base coat will just aggrivate you. Red is notoriously difficult to work with. If you want to truly replicate the "Max Technique" you be better off applying white over the black primer, then spraying your red. But the Max technique is just a variation of whats generally known as "pre-shading." The difference, as I've seen it explained, is that Max mostly uses clear colors over his base coats. While this does create some interesting finishes, it's not vital.