GrammCym Ready to repot, yes?

[nogreenthumbs]

This is a GramCym Mem. Nathan Newman 'NN'. It's a pretty big fella at 2.5' tall from the top of the pot with a nice bunch of blooms, but it seems to be overgrowing it's pot and I see 3 new roots coming out of the newest growth which is still immature. It's in a 4.5" pot and the 2 biggest bulbs are 2" wide at their widest point. There are a total of 7 bulbs in the pot from the youngest that's maybe the size of a big almond to the 2 biggest and the new on that's balanced on the edge of the pot. I've got some 6" pots on the way.

I assume with the new roots sprounting, this is a good time to repot this guy into a larger pot similar to a Cattleya?