Strike IS a great tool, I DCA with it every week, day, and hour! But, don't leave life changing money on there without a reason... Buy, use as needed fo monthly expenses, and hopefully every time your amount hits a certain (self set) threshold you sweep it to cold storage.

I don't worry about my sats on Strike... Maybe once a month or so, I sweep my balance off, so if I WAS to get my account frozen or compromised it is only the last 1-2M sats I might lose/get frozen. That is where I am comfortable... Your tolerance may be more or less.