Moved SSFIVAE & SFxT over to the new cab today.
Had the same issues I had last time around with SSFIV on the old setup, but had forgotten.

Here is the main hiccup for anyone else who keeps uneccesary services turned off and doesn't do updates on their cab.
If you get an unhandled exception error when trying to launch this, you need to install Games for Windows Live,
but it won't let you do that unless you have Widowns Live Sign in Assistant installed.
http://www.microsoft.com/en-us/download/details.aspx?id=15106But it also won't install the Sign in Assistant unless Automatic Updates is turned on.

You don't need a connection or network services enabled, but updates has to be enabled.
It can be turned back off after installing the Sign in Assistant.
In short, turn on automatic updates, install Windows Live Sign in Assistant, then install Games for Windows Live.