Help Hamid's family in Iran, first. Set up a trust for Gray with most of the rest. Keep enough for Hamid and I to live comfortably but modestly and still be able to travel with disability access for me.

I suppose we'd have to move for personal security reasons. But, I'd prefer a lovely stone cottage on a few acres over a rambling mega-mansion swallowing hundreds of acres of arable land and disrupting the local ecosystem.