just felt to me that having a short and sharp kick playing on the beats would help with emphasizing the rhythm even more.
Side-chaining is just having a compressor on a track responding to the signal of another track, so in this case the 808 bass would have a compressor on it thats responding to the audio fed to it from the kick, lowering the volume of the bass when the kick hits, helping it cut through the bass.
But those are probably not needed, The 808 just didn't feel sharp enough to me on my first listen (If that makea any sekä😅), so i suggested that.