Just found an email I received from Steve Massey from
Myastroshop about the 10" Skywatcher with finder, rings and dovetail and it comes in at 14.5 KG. That would really be pushing the limit of the CG5 especially having to stop the movement of the scope at the end of a goto.
If you can go without goto then the HEQ5 at around $1000 would be a much better option, but even then you would be pushing it with a 10" for imaging.
If you are just thinking about visual work then keep your dob and get an Argo Navis at a much less a price.