I also calculate a GAI of 121, so the GAI is about the same as the FSIQ. However, given the scatter within the VCI and PRI, some testers would say that none of these composite scores (VCI, PRI, GAI, or FSIQ) are interpretable as an overall measure of cognitive functioning.
Also, I don't think the PSI composite score of 112 matches the subtest scaled scores of 11 and 7 that you report. The sum of these two scaled scores is 18, which is below the population mean of 20 (i.e., 10+10), so the composite score should be less than 100, my best guess would be the composite score should be about 95, not 112.
