Good stuff!
The trim bolts for the arm rest on mine came undone on a road trip. Dab of loctite might help.
Inner tubes are a must, and maybe a map of Morgan dealers plus a question to them in advance what if any parts they keep in stock (I suspect not much, if any) - maybe add S&S dealer map too.
And have a backup plan (eg funds for a 2nd hand MX5?

)