Collimating tools, both the Cheshire eyepiece and laser collimator are great tools, they basically get a run each session in my scope to ensure the view is as good as it can be.
Telrad, a real must have as well as planisphere software so you can print out telrad charts.
Three good eyepieces, wide angle 30mm, 12mm and 9mm if you are staying with no tracking. Otherwise you can go for good plossls in the 12 and 9 as the tracking will keep the object centred but the 30mm should be a wide angle to allow viewing of large objects.
Good 2x barlow.
Good choice of scope
