The 32 would not include outdrive, norman were very flexible with their tape measure so a proper measure up would be the only real way. You will need more than 32' for a 32 anyway as you will not be able to stop instantaniously and a bit of wind can mess things up. What sort of mooring is it? Can a bit stick out?
Its a side canal mooring on a farmers field i will have to ask the people behind and in front if they mind then ask the owner if its ok i think it may be to big though i have a norman 23 now so the extra 9 feet might just be to much with the z drive!
If they, that is the boats either side of you like you, they will udge up or back up to suit . Moral is make sure they prefer you and not the next contestant. Pub nearby to discuss trumps a bunch of flowers. Good luck.