Now for the bars etc'
I have been using my mount with a VC200L mounted on a cheap dovetail with good vixen tube rings. I then had connected my refractor on the top using tube rings as a guider. This worked well until I got a bigger refractor. This increased the weight. The result is the cheap dovetail will flex as I slew around the sky. The goto has become much more inaccurate as a result.
I have recently bought a side by side bar from these guys.
http://www.starstuff.com.au/
Not cheap but hopefully will be much more secure. It lowers the weight closer to the axis of the mount thus reducing the flexure.
Depends on what you aim is I guess.