I think 100 XMR will be more then enough for something like that. Well it depends of your lifestyle, but with 5000 XMR you can retire by the end of a year.
way too optimistic, to buy 5000k XMR u will need 700k USD and it will probably not be trippled till end of the year.
5k USD to XMR will not allow you to retire this year as well, but probably next one or two for sure
