You said "Hmmm. That’s interesting. So you don’t really know what to expect or you don’t have any estimate of how much you’re gonna earn for each position?
When long term trend trading you can’t / don’t have any idea what to expect and can only have a poor or useless guestimate of how much you are going to earn.
You let the trade run until the trend starts to change, whether that is in the first few days, weeks or several months on.
You must have the capital and cojones to accommodate the drawdowns that will occur during the trade’s journey.