That's probably wise, there's quite a few subplots that Root A just didn't cover, and a lot of character relations I.e Banjo, Hinami and Shuu to Kaneki that were lost in the progress. It might not affect the early episodes of re, but as things progress it'd get more confusing.I've got a friend that's anime only, he's asked me to tell him what happens in the manga when we Skype next.