I also have a hard time catching up with established shows. It sounds like a lot, but it averages to about ten 45 minutes episodes per season, so it's not so bad. I had to get in the mindset of "nobody cares how long I take to watch it". I just casually watched an episode or two a night for a few weeks. I recommend watching, it's awesome! If you do start, I'd say that season 1 is slower than the rest and with lower production value, the show doesn't really ramp up until season 2, I feel, but then it's a wild ride the rest of the way.

As others have said keep going through S1. It sets the scene nicely for bigger things later on. I personally rate it as one of the best things I've ever seen on TV. Certainly the best sci-fi I've ever seen.