I’m feeling pretty darn confident with Ady’s abilities. I’m just trying to break down for myself where several potential deaths could fit within the sequence.

Fett lands on the skiff, tries to shoot Luke but gets his gun chopped up. Potentially, Luke could just kill him here, but that means that a lot of the sequence has to change to accommodate Fett going away.
That gun firing from the sail barge hits Fett, knocking him over. This point could also be a place to insert a Fett death, as he falls down and the camera shifts to Lando asking Han & Chewie for help. Luke then jumps to the other skiff, meaning only a few shots have to be replaced with added footage or we cut back to the sail barge interior (which means a music edit).
Fett is about to fire on Luke, which Luke could sense. Fett would fire his wrist gun thing, Luke would reflect the blast, and Fett would take the full force of it. This requires even less editing of the sequence.
Han hits Fett with his spear. This point is probably where Ady will make the “better death” edit, with a few possible outcomes. Han could impale Fett with it, hit his jetpack and cause Fett to die in an explosion, or activate the jetpack and Fett explodes while in the air. These all require little in the way of re-editing the sequence, with the most work being a few insert shots done in the same manner as the Hoth extras or a CGI Fett exploding in some manner.

My big concern is what can be possible with extant footage, new material (e.g., ESB-style inserts), and CGI. I’m just happy the sarlacc (beakless, I assume) won’t burp after indulging on an overappreciated bounty hunter.

Whatever happens, I’m certain Ady can pull it off without music edits or interrupting the flow of the sequence.