I've taken similar measures and have been able to go 11 DAYS on a single charge at one time, now averaging about 6-7 days per charge.
http://xdaforums.com/showthread.php?t=1305130
The important thing is to get the idle battery use down (< 1%/hr idle), and let important notifications through (using SMS is more efficient than keeping a 3G connection active.
http://xdaforums.com/showthread.php?t=1305130
The important thing is to get the idle battery use down (< 1%/hr idle), and let important notifications through (using SMS is more efficient than keeping a 3G connection active.