I too think the tower is about right… The roofline of the little dormer on the front roof part seems about the same height as the total roof… These lines look to be about halfway up the tower front window from the frontwall/lower roofline… Judging by the pictures of Bruce’s mockup at the top of page 2, seems he is right on…
Of course, it’s just my 2 cents worth… (http://www.largescalecentral.com/externals/tinymce/plugins/emoticons/img/smiley-cool.gif)