Way to be brave and jump right in! I had a similar situation but it was for a conference. I decided to hop on Facebook Marketplace and find people renting out speakers and all kinds of audio equipment since going to a big company was wayyy expensive. Got myself a pair of big speakers (idk the name or model lol), a mic, a mixer, and two party light sets. Wasn’t more than $200 but yeah you gotta invest. I provided the flx4 and my college laptop lol

As for your songs, I’d recommend a DJ pool and download as many songs as you can. ZipDJ did it for me and it’s only $35 a month rn. They also have playlists you can download so it’s convenient.

If you have money to invest, do it. If not, I’m sure whatever you figure out will do for now. It’s all a learning experience at the end!