My info. isn't nearly as recent, but it does seem fairly easy to rush FLS. I went for the first time back in November and I was able to get a ticket to the 7pm show after having stood in line for Come From Away SRO on a Sunday. I walked over just after 12pm and got a partial view seat, 3rd row, but way off to the left against the wall. Honestly, though, the view was fine -- I wasn't able to see the entire stage, but I almost never had trouble seeing the performers because most of the action is down center.
The 2nd time I went was early December, again I went on a Sunday for the 7pm show. This time I got to the box office a little early (11:00-11:30am) and there was one lady already waiting outside. By the time the box office opened, there were three or four more people behind me and I think they all managed to get tickets. Again, ended up with a partial view seat all the way to the left, but I think in the 2nd row (view was totally fine, much like the first time).
tl;dr It seems like you should be fine either way, maybe as the performance gets closer on the day, the box office sells unsold full view seats for rush. Sounds like your chances are better for 10pm shows from everything I've seen/read!