I think that 12" goto will be wonderful.
Be aware there are other forms of imaging than sticking a DSLR camera on the mount for long exposure. Video, webcam can provide great results and work fine on most GoTo mounts. Even eyepiece snap shots with your cell phone.
Astrophotography – Overview of Different types and what is needed
https://www.youtube.com/watch?v=jHyQbHJl5V0
BASIC ASTROPHOTOGRAPHY USING COMPACT CAMERAS AND SMART PHONES
Orion
https://www.youtube.com/watch?v=fz63FnLnswE
Beginner Astrophotography
https://www.youtube.com/watch?v=hx0OGsuZTUY
WEBCAM ASTROPHOTOGRAPHY - PLANETS
Introductory astrophotography using a Webcam for planetary imaging -
https://www.youtube.com/watch?v=CeHj6qT5JSE
https://www.youtube.com/playlist?ann...id=CeHj6qT5JSE
http://www.universetoday.com/108692/...m-to-planetcam