With over an SD between his fluid reasoning and the next closest index score, he is likely a highly conceptual and abstract learner, whose strengths will become more and more evident as primary academic demands leave rote and foundational skills behind. Consider that, though his visual spatial score is in the GT range, and his verbal comp score is close (MG by some standards), the gap is wide enough that even those strong abilities lag behind his ability to grasp abstractions and think adaptively. I wouldn't be so sure that his performance in second grade was purely because he had a bad test day, as the FRI includes a measure for which there was no analog on the WISC-IV (quantitative/algebraic reasoning, in the figure weights subtest).
When the index scores range 48 points, the FSIQ is not terribly representative, I think. Even the GAI may not capture his peak potential (although it does weight the FRI more heavily than just 1/3--40%, in fact), with a 27 point range among the indices comprising the GAI.
