Welcome Mike!
Some nice upgrades on your bike. If you're in Devon you're in green lane central, and TTR central too!
My brother had an XL600 - lovely comfy and quite grunty bike, but it got too hot during Austin Vince's Spanish mountain orienteering events (The VINCE) and dropped a valve seat 2 years running (should have learned and fitted an oil cooler after the first time, but hey ho) Now he (ab)uses my TTR350!
Ride safe,
Simon.