I'm 5'9", but fairly short legs. Even so, I wouldn't call it comfortable, although it is tolerable for shorter flights <2 hours. The legroom for me isn't an issue. The bigger problem is that there is little tray space to use a laptop, and it's difficult to lean down to get something out of your bag underneath the seat in front.

If at all possible, if you end up with 31" pitch, I'd suggest putting your small bag in the overhead bin.