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There is no easy way to determine the composite scores on the WJ without the scoring software, as they are not simple averages (some subtests are weighted more heavily in the composites). He did take all of the subtests for Broad Math, but not for any of the other qualifying composite scores. You would need one more subtest for Broad Reading, and two more for Broad Written Language. If you had all three of those subtests, you would then also have sufficient data for the Broad Achievement score.
I would suspect that the Broad Math might be in the ball park of 145, but no guarantees. And the other two honestly are hard to estimate. If the applied skills are much higher than the basic skills and fluency (as is the case for mathematics), then it is possible that the composites may approach qualifying. And if all of them at least approach qualifying, then it is more likely than it would be otherwise that the Broad Achievement score is in the range.
His WISC-V scores are good, and unlikely to be significantly higher on the GAI. (Though that would depend on the consistency of his subtest scores in WMI, and PSI.)
