sis get a lawyer pronto to secure that shit. you'll want to pay off any big debts you have and then get that shit into a tight trust that will pay you out dividends/returns.

if you do want to give to charity then give from the returns you get, saved up for a couple of months a % of the returns and then donate that stuff.

do not actually touch the main 700k. you never ever want to actually spend it. that money is your base principal. you dont spend the principal, you spend profits.