found the following guide, post 3 downwards useful, got my install down to 17GB (not installed WMC yet)..
http://www.overclock.net/t/1156654/seans-windows-7-install-optimization-guide-for-ssds-hdds
turned off hibernation
flushed restore points but kept it enabled on the system drive
turned off drive indexing
changed power options to high performance
run WEI
turned off defrag on a couple of partitions such as recovery where its not necessary
disabled superfetch and prefetch
http://www.overclock.net/t/1156654/seans-windows-7-install-optimization-guide-for-ssds-hdds
turned off hibernation
flushed restore points but kept it enabled on the system drive
turned off drive indexing
changed power options to high performance
run WEI
turned off defrag on a couple of partitions such as recovery where its not necessary
disabled superfetch and prefetch

