Your statement seem very confusing and I can't comprehend the point you are trying to make but however if your points are for buying and selling, don't you think you are too new to be talking on that direction? And also if you cannot be able differential between low and high how would you  cope with the method you are actually referring to, well I don't really know the kind of ideas or what you were told about Bitcoin that made you want to venture into buying and selling of Bitcoin but for the safety of your investment changing your investment ideas to accumulating and holding for a long term will do you more good, however I realized you're still new here perhaps you can possibly read through to understand the use of DCA strategy because it will really help you on your Bitcoin accumulation.