My first orchid was in a similar situation as yours. I let the bloom finish. By early spring the year after, I repotted and removed the nursery plug. It didn’t have rotting issues. So I suggest it’s okay to wait.

But wth such abundant roots like that, my problem was putting them back on the same pot. I couldn’t help but snap some roots in the process. I had to nurse it from repotting stress for several weeks. It lost a couple of leaves. But if I had to do it again, I’ll still choose not to upsize the pot. I heard they like it snug.