I would invest everything in real estate such as at least 2 or 3 apartments with 2-4 bedrooms in a good area in my hometown. Then rent them out preferably to a family or older couple that will live there for a long time. A small percent of that rent would go to a savings account thats preserved for future repairs/restoration, aiming for a bigger repair every ten years. Then I would take whatever I need to live off of and whatever is left over would go to into new mining rigs when the price of gpus drop.

Edit: While searching for tenants I could use them as mining locations