If you put in all that work maybe 144 is the best you can do, I think you could maybe get into Cooley, FAMU, or Appalachian with those numbers and you would definitely be able to get into a CBA school.
I think the LSAT is kind of a good measure, because the types of questions they ask are like law school multiple choice questions and if you can't distinguish between the two right answers on the LSAT there is a good chance you will struggle on the MC in law school and then the bar. I obviously was not a master of the LSAT myself, but if you are getting 144 and 138 there is a chance law school is not for you and it might not be worth giving up 3 years of your life and tons of money, because 138-144 is an indicator you either are not to hot on pressure tests or distinguishing the nuisances of a multiple choice question. There are obviously people who overcome a bad LSAT score and do well in law school and as legal professional, but LSAT score is an indicator of performance.
Just like a 5'7 white guy probably shouldn't hire a trainer and dedicate his life to becoming an NBA player. Obviously there are some short white guys in the NBA, but there are better avenues a 5'7 slow white guy could pursue.