lol... I am not sure if this is a serious post and strategy, but it actually made me laugh -> so you get an upvote for that.
But - this is terrible, Bitmex is famous for constantly having small spikes and dips (via bots) to liquidate both longs and shorts -> so in your example, both positions would get 'stopped' rather quickly and you will lose your $$.
Please don't trade like this.