LaurenS....we're kind of in the same boat as you...planning on an Oct. 3rd visit, but worried about crowds. It's me, wife, three kids 14, 10 and 6. After much soul searching, we've decided that it is such a once-in-a-lifetime thing that even the high cost and possibility of big crowds is outweighed.
We were all excited about the possibility of riding so many attractions at night, but we'll play it by ear. If there ARE long lines for rides, then we'll just do everything else!
I understand your husband's hesitation, though. Spending all that money on a Disney trip and then paying an ADDITIONAL 150 bucks or so seems crazy! But the other way to look at it is if you're paying 2, 3, maybe 5-thousand bucks for a Disney vacation, then what difference does 5-thousand-150 dollars make?
Hope to see you there!!!