If you aren't in the trade, the safest time will be if it breaks out. The breakout is when it leaves the SZ it is currently in and after it does finds support where the top of the zone used to be. Thats usually a pretty good place to enter a trade.
If you want to give it more wiggle room it could hit .00009999 sat. Otherwise should be a quick and easy trade. Bitcoin is a volatile market. It's going to move up towards 13k before going down to sub 9k then work its way back up. However we do want to trade on this market, we just don't want our money tied up too long. So this is where we need short smart trades. Get in at your price point and get out close to target or set stop loss and move it accordingly to protect paper profits. Don't be the victim of a BTC spike.
Why wait for the storm to pass when you can learn to dance in the rain?
This is educational and only my opinion. Good luck all.