5’7” 20 year old male goal weight/body fat percentage/BMI?

Note: This is a somewhat long post because it’s my first one o: and I don’t want to leave out any details that might help. Also, all weight and body fat measurements are from using a scale (I know that weight fluctuates during the day/day-to-day basis due to water weight/sodium levels/time of day and that this method of measuring body fat is one of the most inaccurate).

Just kidding about the BMI btw, cause it seems unreliable based on other posts I’ve read since it only takes height and weight into account with no regard to body fat percentage or fitness level.

With that said, I joined MFP and started my lifestyle change 26 days ago. I started out at 236 lbs with 32% body fat percentage, which put me at 36.9 on the BMI scale. I didn’t know too much about BMI vs. body fat percentage as indicators of health and fitness at the time. I used the CDC website and found that I would have to slim down to 159 lbs to be right at 24.9 BMI, the highest for my height to still be considered “normal.” I did some calculations just now and saw that with my starting weight and starting body fat percentage, I started with a lean body mass of about 160.5 lbs and 77.5 lbs of fat. It was then that I realized how inaccurate and useless BMI is at gauging health/fitness since I could be at 0% body fat and still not be “normal.”

The point of this post is to ask what a good/reasonable goal weight would be if my goal body fat percentage is 15% (I know I’ve got a long way to go haha). I’m currently hovering around 219-223 lbs and 28-30% body fat (I weigh in first thing in the morning and right before I shower at night just to track daily progress for a better average throughout the week). Hypothetically, if I’m at 220 lbs right now with 29% body fat, then my lean body mass is about 156 lbs with about 64 lbs of fat. If I maintain this lean body mass, in order to reach my goal of 15% body fat, I’d have to have 156 lbs of lean body mass with 27.5 lbs of fat for a total of 183.5 lbs. I just want to know if it’s impossible to maintain all/almost all lean body mass while losing that much fat (I try to do strength training while getting enough protein*), so that I might end up at something like 140 lbs to get to 15% body fat, or if 184 lbs is a good goal, or if I forgot about something/miscalculated/don’t have my facts straight… as you can tell I’m quite the noob, and I’m not really sure what to do or what my goal weight should be, so I appreciate all help/advice/responses!

*also side question how much protein is “enough protein” I’ve heard some say 1 gram per lb of body weight or 1 gram per lb of DESIRED body weight cause then for me that could be 220 grams or 150 grams