Right...
Put a big chunk aside (maybe 2million) to allow my disable son to live like a fucking king once we are gone. DD could go live her life guilt free in the knowledge that he is being looked after and she can just drop in and play with his vast toy collection and hang out.
Buy a modest 5 bed detached house with a nice garden.
Keep my job but stay part time as i love it and its very flexible.
Pay a full time crew of people to be very discrete but to privately tutor my son, keep the house clean and make most of the food, mow the lawn, clean the pool etc.
Go to great lengths to pretend that my business has suddenly done very very well so i can say that's where the money came from and i can treat everyone to fabulous holidays and catered Christmases etc.
DH would instantly take early retirement, i love the idea of starting a pair of businesses next door to each other. One called 'Retro' an eighties style classic arcade (dh's dream) and next door would be 'Vintage' a full on frilly, charming tea house where i would make all the scones and cake fresh to order. there would be a joint garden with a fab play area undercover so it would cater a wide crowd. Nerds, young and old, girls day out, families, mothers with toddlers, grandparents etc etc.
If i could afford it, i would like to buy plots of development land in my city and return them to parks and plant trees.