Jungle gym coveralls - how much yarn did you use?

has anyone made:

http://www.ravelry.com/patterns/library/jungle-gym

im making the smallest size.
according to the yardage it should be 225 yards and 100 yards trim, which according to a yard to meter converter is 205m + 91m

my 150g of wool works out at approx 166m so id need closer to 200g

so i dont have enough? or are the measurements wrong? ive got three or four newborn soakers out of 100g so im a bit confused as to why it needs SO much yarn?

If it's aran your wool is 166m/100g so 249m total

So you should have plenty.

i THOUGHT i was working it out wrong
i found some spare green trim that matches the main too, so ill have some extra if i need it for the cuffs.

ty