As I dump all remaining fiat into Bitcoin at the end of every month there is not really sideline fiat. I hold a small cash reserve for urgent cases to not have to sell any Bitcoin but besides that, I do not see any point in holding this crap.

Limit orders imply that you have fiat on shitcoin casinos which is nothing I would recommend.

Set an automated DCA at an Bitcoin only Broker who sends it directly into your cold storage and call it a day.