Maybe a good time to sell your current speaker wires and upgrade. I would look at it as an opportunity to re-optimize for your new speakers. I have found that my ability to discern sonic differences improves decade by decade and I can get much better match’s for my equipment.
While I have not done really careful listening tests… I don’t thing biwiring makes a difference above upgrading the connectors from the stock flat metal connectors. I’ve used to use biwired speaker cables. I now put everything into good mono wire (?) cables. Biamping can make a big difference of course, but that is different.