I'm thinking about removing all my ads BUT Adsense - can I tell my viewers?

I've done some math, and if I take out all my ads (popups, annoying banners, etc), and just put some adsense banners up, I might be able to do just as well, but with annoying readers a lot less. (I run a churn site off of SERPs - no real 'loyalty').

I was wondering if there is a way I can say" Hey, I only do adsense now, but I'm going to switch back to all the extra ads if it doesn't do as well. Help me out." withour breaking Google's TOS.

Thanks for your input!