Looks like you are really enjoying that and it is a great song..
It sounds okay, you just need to work on the technique IMO.
playing the repetitive excersizes over a couple of weeks to get it smooth, that way it won't drag,
YMMV on this but the way I learned to hold the octaves with the left hand is using the 3rd rather than 4th finger, especially for the slap.
Athiest, Anarchist, Ambivilant.