looks good
for the guys using QHY8's i remember seeing somewhere that you should re-adjust your offset/gain when you put a Ha filter in otherwise you will have to expose forever to get any real signal.
see here:
http://www.lightstorm.at/pdfs/QHY8_settings.pdf
(pdf made by lightstorm on qhyccd forums)
just make sure the other settings are as you would have them when taking a light frame (i had the ccd bin2x2 and had spent a while getting it dialled in when i realised
)