Great idea man, I do almost the exact same thing. The only difference is that I never let myself run out of crypto savings on main coins like ethereum, bitcoin and litecoin plus I make sure that I keep a good amount stored in the bank. That is because we'll never know when emergencies come. But hey, what you are doing is great, family, friends and your loved one deserves what you are doing. This is just an advice to give you more options to be more prepared for emergencies, I have learned my lessons already.