Stunning bloom.! I would have thought that 2 birds with one stone wouldnt hurt at all. The repot will enable you to assess the health of the root system while at the same time disposing old decaying media (careful with chunks that have been adhered to by the catt root to save damage). have a look at the catt repotting/ hygiene/ cleaning advice in the relevant section to save repeating. New leads often put out a good number of roots each time so im wondering if plant has suffered root rot episodes if it was last rehomed nearly 4 yrs ago! This is corroborated by those thin wire size remains on some roots where the tissues have rotted previously.
I would certainly give it some maintenance removing old media and dried rotted plant tissues. Gorgeous plant, I wouldnt want to lose it.