FSIQ isn't even generally valid with that big a gap. VCI at the 98th percentile sounds like at least verbally gifted to me. When you get the report, make sure you get subtest scores and raw scores as well...a "spiky" 98th and 96th percentile and a "smooth" 98th and 96th percentile kiddo may present very differently. My son's 99th percentile VCI had subtest scores ranging from 19 to 12, with the weaker area illuminating the effects of his disabilities.
My son has a very low processing speed, too, but he has a number of other issues (visual processing, motor coordination, AS/NVLD) that might limit the usefulness of what I could share.
