That sounds good, looking forward to it, thanksiOS 9 is adding APIs for content/ad blocking. We're expecting a boom in ad blocking app on the heals of it's release. Since that's only two days away, I recommend you wait a bit and see what turns up.
You'll have far more options than we do at this moment.
Of course, that means you'll have to update to iOS 9, and if you're cautious that means a week or so of waiting to see how well it works; especially on older model iPads.
Still, I think it will be worth it.
From the looks of it so far, I don't believe you can add specific host sources to iOS 9 adblocking based on beta testing several adblockers. Hopefully the API is expanded to include that option as opposed to specifically blocking ads one at a time or generalizing all elements given a certain word, etc. Particularly with Apple pushing for full-screen video ads that cannot be x-ed out as well, it'll be a pain in the rear to attempt to block them when implemented