fwiw (from a newbie), If you have to carry the scope any distance you might consider the 10", even though I do all my observing at home I still have to carry the scope down a long narrow hallway, thru a couple of doorways, down steps and across a large expanse of lawn.. once for the base and once for the OTA, by the time I get there I'm usually pretty glad I don't have the 12"
Also, the GSO R&P focuser is pretty basic and I'm already finding it a source of frustration, sounds like the Crayford would be a much better choice..