Reply to The low-down of speakers

Okay so thanks to that project x movie, a lot of people in my grade want me to dj at their parties this coming spring and summer

I'm on my way to getting a soundcard but I really need a pair of speakers I can lug around. Everyone is pretty much 18 and the parties only get to about 50 people but I would want speakers that could handle college frat parties for next year so maybe capable of 100 to 150 to 200 people. If I could add on/easily upgrade a system to be able to handle these numbers that'd be awesome but 50-75 people is all I need right now.

I know the difference between passive and active speakers but I'm not sure which I would want for house parties that are easily portable.

I would like to not have to spend too much on speakers, like around $400 but anything in the $200-$300 range would be awesome, not sure if that's realistic though but it shouldn't be too expensive for just 50-75 people, right?

A lot of people from where I live like rap music that has too much bass in my opinion, believe tyga, lil wayne, torey langez, etc. even though house and its subgenres are my favorite type of music I'm willing to play out of genre. So the speakers should be able to handle bass pretty well for this type of music.

Where is the best place to look for good deals on quality speakers? Craigslist? 123dj? Planetdj? KPODJ? Not really sure where to start so some pointers would be great, thanks much.