Whatever you use, before the thing kicks off – test the rig. It usually takes a lot of power to get a decent volume outside, and not much gear is up to it.
Start with the volume low, and bring it up until the sounds starts to harden and begins to lose it’s quality, note that position and then don’t go that far during the party or broken speakers etc can result.
Seen a LOT of small gear damaged by parties – people tend to turn it up as they get groovin’.
If you use some “HiFi” speakers, or a minisystem etc – stack the speakers one on top of the other to get a small boost in loudness.