When should I repot this oncidium?

[Daenerys]

This is an Oncostele Pacific Perspective. I last repotted it in September, so only 5 months ago. At that time, it was losing pseudobulbs to rot, and barely had any roots at all. Fungicide treatment has fixed the rot problem, and since then the orchid has grown up a ton of roots. It has also matured two new pseudobulbs, and in general seems to be crowding out of the 4" pot. There are also two new growths that are a couple inches tall.

I feel like it needs to get repotted to a larger pot soon, but when would be the optimal timing to do so? I'd hate to accidentally derail the recovery process.