If it's just one show, I don't think it's worth it. Also, for most gigs in Malaysia, the venue/organizers provide a backline (the amps, drumkit) for all the bands. If you get a wireless system, you might have to set it up beforehand and maybe even have to share...

Play the music, and the rocking out will come naturally. And note that sometimes those jumps and stuff are exaggerated for music vids. When they do it live, it's usually just accompanied by a held chord or a slide down/up the fretboard - not much finger gymnastics while jumping around, that's for sure.

But then you'd have to worry about stage size and/or rugburn (or stageburn?). Ouch!