This is a 30i solution. If you speed up from 25fps to 30fps do you think it will be any better? 23.976fps with a pulldown to 29.97fps is the way to go.
EDIT: btw this script will sync the audio to match the 23.976fps. It's no more disturbing than the speedup applied to movies filmed in 24fps then converted to 25fps to fit on a pal disc.