Ah at last a tech guru, I was starting to get worried there
. Monoxide has given sound advice and I really think you should consider a purpose built power supply. Look on the bright side, if you get a good one (ie lots of grunt) you could virtually power everything (scope, cameras etc) off the same supply which could cut down on power adapters and chords all over the place.
I bought some bits and pieces from dick smiths and made up a box with 4 pairs of outputs which connect using banana plugs. The box connects directly to the power supply and I run my scope, seven oaks dew controller with heaters (usually 2, one for the corrector and a small one on the eyepiece or camera) , peltier cooled camera, jmi smart focus and often my ETX at the same time. I have made short cables that plug into the box via banana plugs and each has the female part of a cigerette lighter type connector on the other end. That way all my bits and pieces retain the male end of the cigerette lighter connection which can be used when mains power is not available.