Hi Peter
For free you can go to
http://www.mlunsold.com/
and download camera control\
and image processing software. ImagesPlus used to cost about $US300
There are good tutorials available on youtube. There is a discussion group.
You will likely need a longer USB cable.
You can get the DSLR to show liveview on screen for planets. It saves as SER files and they are processed quite nicely on a quick laptop.
For DSO it will batch process your light, flats, dark flats and bias all automatically. Then the fun can start.
It seems people are more interested in APT and Pixinsight these days.
Astrotoaster is great for lucky imaging and outreach and seeing quick results. It uses DeepSkyStacker All free too.
Good luck
GlennB