Tommy & Co.,
If you are thinking that this venture is going to be something you can just purchase your way into, you have a harsh dose of reality coming.
The successful people in this industry are those that have built their libraries and honed their skills over a long period of time (and money). If you want to narrow your target to say, schools or something like that, then you can better zero in on what you'll need to acquire for gear and music. However, that's only the beginning. Anyone can buy some tools, but not everyone can build something with them.
The most important tools you can have are the ones that are within your knowledge of music, people, pro audio and personality. You have to stop and take that inventory first. Also, going into business for yourself means having good communication and literacy skills. From what I have witnessed so far, you have neither.
If this all was as easy as turning on a sound system and streaming an online jukebox, then there would be no need for professional DJs. If you want to play DJ with a bunch of toys, then go have fun, but unless you're serious and are prepared to hear the truth, kindly stop wasting our time and resources.