If you plan on wanting it to be portable the HEQ5 Pro fits the bill - depending upon your age and physical capabilities you could probably cope with an EQ6, but it is heavier than the HEQ5 Pro.
You'd also need a portable power supply to run the scope, dew heaters etc. Stay away from power packs like the Celestron or SkyWatcher ones, they won't last long term and usually won't last a full night running everything. There are quite a few good threads here on IIS that discuss alternatives.
Many of us have been running the HEQ5 and getting nice results from guided imaging with a portable setup.
Before jumping in and buying gear it would be well worth your while going to a Star Party on an Astro camp to have a good look at what gear others are using and what will suit you and your budget.
The next camp (that I know of) is this weekend at Snake Valley.
http://www.iceinspace.com.au/forum/s...d.php?t=160005
Good luck and welcome to IIS.
Paul
PS Nice images!