Hi,
I thought I'd post an update, as I've reached a decision in this particular quest.
I've spent the last few weeks thinking of the various suggestions and advice I've been given, and had pretty much decided on a C8, despite the compromises of this type of scope.
After the post by John (Hoges) suggesting mak-cass as an option, I did some more research, and found some very interesting reviews of the skywatcher 180mm. In particular, the observation that this scope offers very good contrast got me thinking. The long focal length (f17) is also interesting in terms of magnification possibilities when observing moon and planets. There are a couple of reviews which helped convince me:
http://www.astro-baby.com/reviews/Sk...0%20Review.htm
https://stargazerslounge.com/topic/2...estron-c8-sct/
These both described the cooling period as being 30-60 min, completely ok by me. Also noted that it can offer APO-esque contrast, and is good for a range of objects other than planets.
So, today I put down a deposit on a Skywatcher 180mm Mak ($1699 as optics central offer price matching...). Comes with Finderscope, 2-inch Dielectric Star diagonal, 2-inch visual back, 2 inch 28mm eyepiece and dovetail Mounting. The OTA weighs 7.8kg, so the super polaris should be ok.
https://www.opticscentral.com.au/sky....html?___SID=U
It'll take a couple of months to arrive, as there doesn't seem to be a great demand for them. I'm paying off the lay-by over 3 months.
I'm glad to have reached a decision, and to have made this step. I think it'll be a great scope, and will be a ripper for lunar and planetary. If I get into DSO's I reckon a 10 or 12" dob will keep me happy.
So, thanks everyone for your input. I know this won't be the last scope I buy, but it's a significant investment for me, and it's been really helpful to hear from everyone.
Cheers
Stephen