1. Build a new 4 story house with 2 of them being underground, on my existing property. Tear my current house down.
2. Buy my 4 neighbors houses, tear them down and build 4 moderate sized houses for my kids with secure tunnels between them all, shared utilities of course.
3. Build a large 3 story garage/workshop with underground parking.
4. Build a bunker/datacenter just for fun.
5. Have the 3 telco's with independent fiber networks run 10gb fiber to the premises for 3-way redundant BGP 10gb internet access.
6. Install redundant power feeds from the 2 electric companies I am very close to.
7. Install 2 large natural gas generators to power everything, as well as a diesel backup & 2000 gallon diesel tank.
8. Guns & ammo
9. Federal Firearms License
10. Buy the 20 acres behind me that is currently empty and keep 8 cows, 6 pigs and 24 chickens that are rotated as they are "used".
11. Spend $2,400,000 on cars for fun
12. 2 armored vehicles that seat 12 each.
Take 20% of what's left and donate it to several charities.
Take 20% of what's left after all that and keep it in a few "physical currency", save 30% and invest the other 50%.