I hesitate to tell you to change anything since you've had success with your other rescue orchids. I usually think that people should keep doing what they're doing if it's successful. But generally speaking, orchids should be in smaller pots than that. In fact I would say a pot about half that size would be appropriate. That's not to say you won't be able to grow it in that pot. You may be able to. But a smaller pot would increase the odds for success.