I can't offer too much advice on the scope side of things, but for the mount I love using the vixen porta mount. I have the Vixen porta II mount and it easily handles my stellarvue 90mm apo. I can set up in about 2 minutes, and pack up just as fast. With a DSLR it's perfect for terrestrial/moon/sun photography.
I used this combo to travel to cairns and take pics of the solar eclipse in 2012, the scope as carry on, the mount stuck into a suitcase for checked in luggage
