Cheers guys, I'm a natural worrier and I've spent a quite a bit of time on optimization, so the red light was on

I'll let you know if things all go smoothly

@Rakuli - I also doubt very much about manual submissions being penalised, particularly since Google offer it in the first place.

I was slightly concerned though, as I know Google 'doesn't like' the same URL being thrown at it on a regular basis, so thought this might also apply to URL's already in its index...