Well done Peter - the L is a fine camera and at that price you can take it anywhere. I've used mine a lot more than I expected to witha Heliar 15 or the Skopar 25. It is really light, and I particularly like the fact that you can see the over/under exposure LEDS on top of the camera - you don't have to raise the camera to your eye to shoot which can be handy. Of course , if you've pre-metreed the scene with a handheld this also applies..
The only thing I'd say about using TTL is make sure your flash will cover the 25mm angle of view...
Enjoy it!