Hey dude!
Nice campaign. Awesome-looking game, too.
I may just be blind, but I couldn't find anywhere on your page that states exactly what the money will be used for. I assume it's to pay everyone's wage, given that you're all doing it full-time now, but it's not explicitly mentioned. Sorry if I'm just overlooking it.
People feel more confident in giving money if they know what their money is being put towards - have you considered showing a cost breakdown of all your expenses?
A nice detailed campaign, otherwise
On the note of an iPhone release, have you thought about showing adverts between levels rather than in-app purchases? As a gamer I can understand why you wouldn't want to use in-app purchases, but maybe ad revenue is another way for you to earn on that platform. I'm sure you've already thought of that though