Allen and Lonkero - I think kixtart is working correctly. I believe my issue is now figuring out how to get wireless devices like laptop and tablets to make valid network connection before the domain user logs in.

In Event Viewer, on the Windows 8 tablet, I am seeing errors for "no domain logon servers available" - so that points to the wireless connection not being ready and connected before the user logs in. That also explains why the kixtart script can be run manually after login, since the wireless connection is then established.