Hey man, don't let these vultures swallow up your promotion dollars. If the system would let me bid less for this project, I would!
I've been working with a hip-hop artist off and on that's based out of L.A., so I already have the footwork done for figuring out the best way to get the best bang for an artist's buck. The way to go is "Influencer Marketing".
In case you haven't heard of it, it's sort of like putting yourself out there on social media, but instead of running your own ads, you pay people with big, active followings to talk about you. You don't just gain exposure, you gain respect because people are hearing about you from people they trust.
Normally this is a super expensive way to go, a lot of places charge upwards of $3000 just to CONNECT you with 'influencers', but then you have to pay THEM too! I happen to have an in with one company that lets you use their system to find and manage influencers yourself (that would be my job in all this), for next to nothing.
I'm also just the best kind of person to talk to about promoting yourself on Facebook, but I think this other way would be the thing to do for your budget and goals. Reach out to me and I can tell you more about it.
-Scott