WPI normally installs programs alphabetically, so you could just tell WPI to autofill the Install Order based on that. Likewise, WPI has an option "Install by category" that you could use for sorting.
Your preset is the "last session.ini" file that vLite makes. You can find it on your vLited Vista disc. BTW when you want to post, please attach it as a file. Do not copy the text as it takes too much space.
Turning off UAC should be the same between Vista and Server 2008: http://www.howtogeek.com/howto/windows-vis...-windows-vista/ You could also use TweakUAC to disable it.
I think Vista's Windows Reliability and Performance Monitor is what helps it keep running smooth better than XP. Either way I think periodic reinstalls are actually a good thing. Not only will the OS be fresh but your program installations too.