Since I am not a very good quilter(hope to be adequate someday), I probably should stay out of this...but I am not lol. I think if you frustrate yourself taking it apart to redo, it may become a UFO. I say that finished is better than perfect. I think it is beautiful, I could live with it! I would definitely try the pressing and then move on and finish and enjoy it. :) You are correct, you learned from a mistake and the next one will be even better.
Margie