Waterfalling Pulse on X-series (PCIe-6363)

I have a PCIe-6363 (and a PCIE-6536 next to it).

The PCIe currently takes a digital edge trigger on PFI5, and then Uses Port 0 to marshall out a waveform.  That works fine. 

Once that's done I need to pulse an enable line.  That seems easy enough.  But I need to do it across 8 ideally (4 minimum) lines.  I have to pulse the latch enables in a waterfall-like fashion so that I only update an eighth (or quarter) of the system at once to prevent glitching.

I have 8+ PFI lines available on the PCIe-6363 and 3 other counters, but I don't see a way to effectively do that.  Am I stuck just using the 3 available counters to divide these up, or is there some clever way to make this happen?