Party tends to reward a specific EQ shape — here's a starting point built for it.
Try +6dB at 60Hz, -2dB at 500Hz, 0dB at 2.5kHz, and +4dB at 8kHz. An energetic, bass-and-treble-forward curve designed for background listening at higher volumes.
Music played at a party is usually background to conversation rather than closely-listened-to, so an exciting, energetic curve that grabs attention at a glance matters more here than subtlety or accuracy.