So you don't want to be too big. I'm 6'1" and 225 and I haven't even filled out my frame yet. You have a lot of room to grow.
And what's wrong with being bigger? You'll be a stronger more powerful human being, less likely to get hurt.
Why choose 150 lbs as a goal? Why not 160, or 180, or 195?
Again, you are obsessed with numbers and your weak abs. Not a healthy habit.
200lbs is not just a number, it's 50 more pounds of mass. Simply mechanically speaking that's an advantage. And in order to produce more force over a long time you NEED to gain muscle, which is also mass. So physiologically speaking it is also much much different to have dozens of pounds of muscle mass more than you have now.
If this was as simple as setting goals and reaching them in whatever way we desired, everyone would be right and we would all be jacked and lean and strong no matter our shape or training methods. But as Rip said, there is no way to reach certain goals if you are 150lbs and 6"1'. And your goals seem driven by some kind of obsession with numbers instead of the desire to get stronger.
I think our friend has an eating disorder. At any rate, he's posting on the wrong board. Best to leave it alone.
I think we have someone who doesn't want to buy new jeans. Go buy some Walmart sweatpants, and start eating. I was a skinny shit when I was young, and it has always been hard to overcome the attitude of being the skinny guy. Learn how to eat, and forget about staying at 150.
It would help if you can articulate what is the minimum weight at which a 6’1” person can reasonably expect to be able to be able to just lift 2x/1.5x or, more generally, the height/weight relationship and justify why.
Never said 150 was a constraint and actually said otherwise more than once.
I don’t have an eating disorder, not according to my doctors or nutritionist.