not bad joe. yes you can do it. don't restrict yourself to amazon! affiliate networks like cj and affiliate window give you a much broader earning opportunity - and there's a lot of really good commission levels you can work with. by september I'll easily be making 500 a month, actually I'm aiming much higher this time.
if you are only using amazon that's very dangerous, btw - or predominantly using it. amazon ought not to represent any more than 10% of your income. even that is a big chunk and dangerous.