Hi Mark and
to the mad house.
I'd suggest buy the DOB, learn the skies and get familiar with the scope for a while. Forget GoTo, although you can do some astrophotography with a controlled DOB it is limited by not being equatorial. You therefore have issues with image rotation and accuracy of the drives. Adam gets it all right in his post.
Get Stellariium (free) and use that and your scope to discover the heavens above then .....
Once you have gotten up to speed then consider astrophotography as your next step. It is a bottomless pit for $$$, time and frustration as I am finding out at present but also very rewarding (I hope !!). DSO's need long accumulated exposures which are only really possible in an Equatorial mount and require much patience and some knowledge and skills that need to be acquired. Currently I am up to about $4500 and am yet to take my first decent photo so don't rush into it. Hang around here, ask lots of questions and learn the ropes first so you can take the best steps for your aspirations as you go.
Told you it was a mad house ...
