RE: Ask your electric FAQs HERE!
I am not sure whether it's the current issue of Quiet Flyer, or a recent past issue, but I'm reading the one I picked up at our electric fun fly last weekend and there's an article on wiring multi-motor aircraft.
With brushless, it's simple: One controller per motor, period. The behaviour of multiple brushless motors on a single controller is unpredictable at best, disastrous at worst...
Brushed motors have limitless options. All you really need is a basic understanding of series and parallel circuits.