A phal in it's growth cycle but also a new flower spike. When should I repot?

[Biscuit&Gravy]

I have a newbie question that maybe you guys could help me with. So about two months ago I bought a phal. from a grocery store. It seems to be doing well (tons of roots and nice green leaves.) The flowers are still going strong. It is really tightly potted in one of those standard flexible plastic pots with sphagnum moss but the roots look healthy with new tips growing. It also has been growing a new leaf. I thought with all this growth it would drop its flowers but they are still going strong. Now it is growing a new flower spike! I've read that I'm supposed to wait until it is out of bloom to repot but now it is trying to rebloom again. When do you think I should repot this phal?

Thanks to everyone in advance!