G'day Phillip, welcome.
Yeah, the Dob is a good purchase
and Skywatcher are a pretty good brand
As far as putting a camera in a Dob, don't bother unless it is mounted in an EQ mount. Long exposure imaging with a Dob is really really hard.
In time you may get a tracking mount which is what you really need for photography.
But you'll be too busy enjoying the views through the dob to be wanting to do Astrophotography yet
