BTW, I love the sharp video on the landing page.
I'd seriously avoid going down the sexy models route, if you're site featured girls in tight tops holding RC 'stuff' on the front page I would have clicked away almost immediately, it cheapens what you're promoting.
Simply using professional photo/video people for imagery will help more than slapping on some tacky model shots.
In the guide it would be worth mentioning that the Hubsan X4 only records video from what it looks like, it doesn't transmit. It also mentions that there are ready-to-fly quadcopter, but doesn't have any links. While it isn't much, having a good resource center with affiliate links can bring in some extra cash while you get your startup off the ground while at the same time teaching the user base.
Edit: After thinking about it what was missing was a call to action page that showed if I followed steps A-G I could fly in a race too. Along the way I would need to make an account to find others in my area, start a local group, learn about regional races, etc. I am guessing that guiding new players is your primary challenge for long term growth?
Edit2: The events page should have a form so you can be notified when there are local events. I am guessing your larger market will be those that want to watch/goto the events so providing them with a way to get involved is funnel #2.
Then I think you might have missed the context of this discussion. The parent comments were talking about the fact that sex sells. Motor racing, especially, has a long tradition of employing sexy female models in marketing. Do a Google search of "Formula One promo girls" to see what I'm talking about. And several of our users have suggested putting "babes" on the site.
Having said that, I'm not comfortable with it. Which is why it's a dilemma.
A world championship level rider in Moto3 is Ana Carrasco - female. She came to the races recently with an umbrella boy. Not sure if it was a protest or a PR opportunity. http://i.imgur.com/xu25bOM.jpg
Cool!
PS: I'm usually a cynic.