I feel like it's really just more of a preference thing. If you prefer manga over anime then the manga is absolutely worth your time, but if you simply prefer anime and don't mind the week-to-week wait, then I'd definitely just stick with the show. The adaptation is very solid so far and they've done a great job of condensing information as to leave out minor details and explanations without omitting anything significant.
However the first season is only going to be 12 episodes long, and definitely won't be able to get too far into the story. I would personally suggest watching the anime for now and if you get to the end of the season and simply can't wait for season 2 to come out, (which would be understandable considering the pace of this series) then you could probably just jump right into the manga wherever Season 1 leaves off.