Here's a study on kids of crossdressing dads:
http://krex.k-state.edu/dspace/bitst...eisbig2007.pdf
Here is a web-visible version: View via google pdf viewer
On the most part they are pretty normal... results are on page 39. I suggest that you start reading there. You can skip sections like "methodology".
One of the kids interviewed was shocked, the rest took it easily. It looks like the kids watch their father's reaction to shape their opinions of it. If the father is conflicted, they don't like that this issue causes trouble for their father. If he's fine with it, they are too. There's a lot more to this document, I think you'll want to read it for yourself.
p55 has advice to fathers. Hmmm they say age 14 is a rough time and it was harder for the kids to hear about their father's crossdressing then... of course your situation is very different. Though, the paper attributes the difficulties to the typical challenges of adolescence, not to the revelations. I guess its a reminder that it's not always about the dressing -- his or yours.
Cheers.