Hi ritztech,
First DMX is 512 channels per universe. Do you need RGB controllers or AC controllers?
RGB controllers = Red Green Blue leds in one unit (node) to create just about any color
AC controllers = normal indecent lights (mini lights, c7, c9 etc) and single color led light strings design for AC usage (i.e.: plug then in a outlet)
If you want RGB then look at the SS (smart string) controllers, hubs, dongle. Pixelnet (SS) will give you 4096 channels per universe
The Lynx USB dongle can be programmed for either dmx or pixelnet. In the wiki is a list of members who will help you program the pic (micro controllers) if you don't have a pickit3. But most members will tell you to get on if you plan on going the SS way.
I hope that helps some. Please ask more and any questions you have.
Cheers
Rick R.