Hi Mark,
Sorry for the shameless self-plug, but I'm currently trying to sell a FLT132 + P-FLAT68 in the Classifieds forum for almost the same price as a FLT110 + P-FLAT68 at Andrews. I have an EQ6 + Orion Awesome Autoguider available too... contact me via PM if you're interested.
As for your questions -
#1 I've seen some really amazing work with the FLT110 here on the boards. For example, just search for site:iceinspace.com.au flt110 -classifieds on Google.
#3 - I'm in the outer suburbs of Brisbane, next to a couple of freeways. I struggle to get decent subs because of the light pollution - the light pollution severely limits my exposures to around 45-60 secs on the same camera settings that others can exposure for around 5-20 mins at dark sites. Most people living in heavy light pollution seem to travel out to dark sites for "real" LRGB imaging... might be worth thinking about whether you'd be willing to spend $$$ on narrowband imaging and/or regularly travel out to dark sites.
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