I'm asking a similar question. My son has scores that are very like yours. I'm providing the portfolio because I think it's a requirement if all you have are test scores.
I calculated my son's GAI to be 157, but he has some very low scores (88 processing speed).
You mentioned that you've addressed your son's EF issues. Did you go to medication?..or have you done this through careful management?
My son has an executive functioning deficit as well, and we've considered medication. Not an easy choice though because he also has childhood epilepsy.
At the moment, we are considering anti-epileptic drugs, but we are worried they will not help his issues staying focussed in class. (he's 8 years old)