Do not try and make a specific dollar amount a day. You can only take what the market gives you.
These percentages have not only applied to myself but 100's of traders that I have worked with. You make 50-75% of your annual profits from only 3 months a year. You make 20% from a single week or even a single day.
Looking to make a specific amount each day sets you up for failure in two ways. It makes you inpatient to trade when you havent hit that number. Two, once you have hit that number you fail to let your profits run.
Can a 50k account be turned into a 250k account in a year. Yes for an experienced trader. But it is not reasonable to extrapolate that return as your capital base grows.