OK, I see you live on the IOW so have limited aircraft to rent.
So, what about going to the Tiger Club at Headcorn, doing your tailwheel rating on the Piper Cub and chating to some of the members there to get some flying in the other interesting taildraggers. Very friendly bunch of enthusiastic flyers. Stay at the local pub, where you can walk to the airfield and they socialise in the evenings ! A friend of mine has just learnt on a Cessna and now flies a PA28. She now says the Cub is the best experience as it is a challenge !!!! That is what you need when things get stale.