configuring multiple fpga's with multiple bitstreams via JTAG connection.

You should consider, that selecting individual devices in the JTAG chain for configuration involves some overhead. In my opinion, the configuration scheme figure 9–28. jtag configuration of a single device using a microprocessor won't be well suited for this method, although it can be basically extended to a JTAG chain. I suggest to provide a JTAG chain for test and debugging purposes and use a PS or FPP configuration scheme that allows individual access to each FPGA, e.g. by using separate command and status and common DATA and DCLK lines.