Good work Richard!
I too am getting acquainted with my new SA100, and finally managed to get a very dodgy spectra of the nova last night. Also using a QHY5 but with a 10" dob. I'm having to do 'drift' spectra, and the nova is pretty much at the lower limit of magnitude to do this with my setup I think. Almost no signal from the continuum, but the emission lines were easily visible, it was obvious I had the right target in the live view.
My efforts are attached and should provide a suitably low bar for everybody else to feel better about their results
Malc