Stay where you are. Row 26 is much the best, with unlimited legroom. I have sat in 26C or 26D on at least ten occasions in the past couple of years.

Some don't like the window seats, A and F, because the exit door partly blocks the legroom. But I sat in 26F a couple of weeks ago, the rest of the row having been taken, and it is still better than the seats in any other row (and I'm 6'4").