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Hi,
I had an 8" F6 and that took literally a few seconds to collimate.
my 8" F4 is a lot more involved but is well worth the effort.
the reduction in exposure duration and the wide FOV are some of the positives.
I just bought a 10" F4 mirror set to build an OTA, so I'm staying with the F4.
with your dark skies, an OAG would work well and you should have sufficient stars to guide. you'd need to account for sufficient back focus though.
I use the baader mpcc and it does the job well provided spacing is correct.
the cats eye collimation tools are very accurate, if not a cheshire and laser might do. a bahtinov mask also helps with focusing as you may not get bright stars to use with live view and the viewfinder can be tricky to look through and focus.
as for colour ccd vs mono, as you said it depends on your patience. mono is a fairly steep learning curve but not impossible.
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