5 May will be a good day! Prayin that all goes well with you, your Trial, the results, and if appropriate your quick and ultimate permanent implant. Do be mindful of the need to follow with care the post surgical instructions, especially BLAST - No Bend, Lift, Stretch, or Twist [if you need something for the A, put in Armwrestling].
Regarding a LONG postsurgical flight, I would suggest you be in touch with Irljenn aka Jenna, since she flew from Ireland to San Diego, USA. She has had the experience. Fionab, Jackie, and RRae have each flown, but I am not sure of the flight durations.
I think I would rather

Prayin for ya,
Mark56

ZZ