I don't know why you can't place a sell order with the same coins that have been put into a stop limit order. You can do it with a bot and I can't see why I can't manually set such parameters?
Well, i have no experince about trading bot so far, and also i just using stop limit order when i going to sleep or AFK ,so what i thought here coins wich already placed for stop limit is reserved for that action,so u cant do anything with that coins except u cancel the stop limit order.
So if u say u can do that with a bot,i have no idea.