Nice, miss having a V8, nothing beats that burble.
Just a word to the wise regards your exhaust, just make sure you can live with the noise it makes, a loud sounding exhaust can get very tedious during longer trips!
Totally, I had a Janspeed full sports system with tubular headers, slimline centre box and ultra slim rear silencer to take the edge off, it was awesome!!!
Tubular headers are a must, don't bother with anything that bolts onto the original cast collectors, they just make a bit of a new noise, tubular headers will help with flow and ultimately BHP gains, all are worthless if the engine is worn, cams and timing chains are very common wear problems and most of us familiar with the Rover V8 consider them to be consumable parts by now.
Yer need to consider increasing the security. They're easily nicked. There's a few noobs who have had similar advise in this section recently and also a fred about it int tratter section.