I have a 7-yr who also shoes a similar variance between the GAI/FSIQ and working memory and processing speed. From all I've read, this is very common with profoundly gifted kids. As my son is still very young, i have no idea what this means for future academic performance/style/fit. However, my son has also been diagnosed with ADHD and being 2e is consistent with relatively lower working memory. Have you had your child evaluated for ADHD?