No, the wage issue cannot be from F.8863 because that form has nothing to do with foreign earned income.  If your client lives overseas and has a tax home there, you'd be claiming foreign earned income exclusion and all the relevant input would be made on F.2555.

As for FATCA, your client shouldn't need to file based solely on the number you indicated, whatever his filing status is.  For unmarried and MFS, the thresholds are $300k at any time during the year and $200k at year-end.  The thresholds for MFJ are $600k at any time during the year and $400k at year-end.  Be careful that FATCA requires reporting of more than just bank and financial accounts.

This article may help you with the preparation of FBAR.