First, endless health treatments for myself, obviously, along with a few things I could not enjoy before, a powerful, solar-powered server room, and the best education and coaches I can get.

After that, I split time between building a strong community, focused on pulling each-other up to the point where we are independent of the main system, and I would fund a few TinkTanks, like the other billionaires.

I would start to strategicaly carve out entire cities, focusing on solar contracts (renewable/green kits, focused on anti-consumption and maintanability). I would also fund business ventures, because if I drive myself broke doing this, I lose power.

EDIT: Explanations:

The server room is to just experiment with AI, try to reach a singularity point if possible, use it as a research device if not. With the right framework, it can just funnel knowledge for me to learn, in a certain format.

"Carving out entire cities":

I would focus on small towns, viages, cities, and convince people to go full green kit. These cities would be living advertisments to anyone who passes through, motivating people to switch to those systems.

I would secretly force extra tools into the kit that aren't needed, but can serve as weapons, for when TPTB try to force citizens to give up their new lifestyle.