I would say yes, as for imaging i would say yes as well, lol unless your going for image of the year which you won't be doing with a
12" dob. As an beginner amateur i would say its a fine setup for F5+ ratios for imaging, If you had a F4.5 or lower well i would go with better means. Have you looked at a
Autocollimator http://www.catseyecollimation.com/index.html ?