https://www.airlinepilotforums.com/r...0-ewr-lga.html Is a thread already made for this. Check the forums before posting a new thread to avoid company pilots from having to make the same posts over and over.
EWR is obtainable, however, quite a while before holding a line. Junior lineholder for November at EWR was 12/11/17 compared to 5/1/18 at LGA. It all depends on you. If you want reserve, go EWR. If you want to fly, go LGA