I would think 3/4 hours is a very optimistic time to read any decent novel. Though I'm not really sure what the length of a decent novel would be but most books I have read would take at least 8 hours.
Maxing at 200wpm is absolutely fine. All that (imo) matters, is it's a total waste - and a mentally taxing one at that - to spend those words/minutes reading crap & looking at adverts!
Edit: no rudeness intended to the fast readers ITT!