If I win the lottery, I wanna live in 2 countries. My home country where I wanna live in a regular family home in my home town. Nothing fancy. And own 1 cool daily driver car (Audi RS3/RS5 Sportback) and 1 car to play with on track days and do race courses in (BMW M2/M3/M4). I already calculated how much this would all cost on a yearly basis.

But I also wanna live in the U.S.A. more specifically, Central Texas (somewhere inbetween Austin & Houston). In Texas, I wanna either buy a plot of land and build my dream house a free standing 5-car garage a barn to be used as a band rehearsal space / music studio with a man-cave lounge area on the 2nd floor. Or I would simply buy an already existing property with one of those big barns and turn that into a rehearsal/studio/man-cave. Let's say the plot of land incl. The main house and the studio would cost somewhere inbetween 1.5 and 2 million USD. How much would it cost on a monthly or yearly basis to run this place? Could anyone calculate how much money I would need to sustain living there? Any help or links to other useful subreddits is very much appreciated.