I am not an expert on pro-audio, but I don't recognize any of those brands. How big of a space do you anticipate being in? I would imagine something like this
would be a good deal better than what you have linked. Since they are active you don't need an amp, just connect them to a mixer and you are set. I think though you should save up some more money, and get a good pair of active PA speakers.
Denon AVR-1713 | EMP E55Ti | EMP E56Ci | EMP E5Bi | BIC F-12