The advertisements aren't all that bad. Make a video solely about advertisements and your views, and say like
"When you watch my videos, please don't mind the advertisements, they just help me and you." or something, and Im sure people would put some sympathy towards you.
And a 30 second video ad in the beginning is more for VEVO or RayWilliamJohnson or popular people, I don't think they pop you the ads so soon, but if they do, make a video more then 30 seconds so you don't have people raging at you saying the advertisement was longer then the video itself.
Hope things work out for you!