I have also been working on reel to go with it, John Cheap the Chapman by Nathaniel Gow - also taken from Henderson's. It is full of leaps across two strings; string crossing requiring the fingering to straddle (difficult if you have small hands); and third position and back down at speed. Its a good tune. They are both a challenge.
I have been practicing slowly. I have also been working on the two Shetland tunes I am going to play. I would like to play one slowly - possibly solo. The tune is so irregular that I am trying to decide if its easier for the listener to understand that way. Also planning to play it on my hardanger using scodatura.