Sorry wrong song . my bad.

It's 6-4-3, if I'm thinking of the right spot, and the pull-off is 4/2 and 3/1 (string/fret).

I would think that with big hands, the thumb position will depend on what allows your fingertips to lead freely. Search for video of Tony Rice and see what his left hand looked like on a dreadnought. Stylistically it may not relate but you'll notice his thumb hardly moves, because the fingers are so long that they don't need help making the reaches. My hand needs to rely on the forearm and wrist. Don't know if that answers your question but might offer some perspective.

@@NashvilleGuitarGuru Thank you, I will look for a Tony Rice video. What I'm getting at here is, since I am having a custom sized guitar built for me, is exactly how to size the fretboard. My Eastman 7 to 6 string conversion Jazz archtop is 2 1/8" at the nut and about 60 mm E to E where the right hand plays. I have 12s on it, for Jazz. Especially for the style of playing in your video, where the thumb is used a lot, I am trying to figure out that spacing. Of course with a thumbpick it's probably less important (shopping for those, I have one, it's too small), but just as a "yardstick," if you hold your thumb parallel to the strings and push your thumb into the space between low E and low A, does the thumb touch the strings? If so, when you "part" the strings with your thumb, how much to they push apart? Anyway, I know this is an oddball question. I am enjoying your video, you do an excellent job of explaining things, particularly for somebody like me, who is a saxophonist of many decades but new to guitar.

Still a dominant chord. Good flavor detail to note though!