I have been playing w HG ver. 1.3-stable.5 up until now and am ready to complete RPi image install and I see Tuicemen states HG is part of the image so do I uninstall HG from my desktop before RPi image install and just use a HG backup I created to re establish my macros and schedules in HG that is part of image?
If you decide to go with the image posted by Tuicemen you start fresh with a blank SD card. I'm not sure what additional macros/routines he has on this image but you can of course back up your current config and restore it on Tuicemens image as soon as you have installed it.
The caveat still remains of course. Tuicemens image will have an older version of Raspbian Stretch Lite (assuming its Raspbian Stretch Lite he used and not the Desktop version) and older firmware too. You'll need to update your install to reflect this.
I still recommend installing HG from official sources and building and testing your own setup. You can easily obtain assistance from the many HG help sources on the web and of course from here.
The idea of an Pi HG X10 hub as a plug'n'go appliance is more of an aspiration rather that a reality with HG in its current form. A lot more work would need to be done on the core code as well as the introduction of some form of integrated hardware/software solution which I doubt will happen anytime soon.
In the meantime I suggest you experiment with the HG application as much as possible and try out the many routines available out in the wild until you find a setup that suits you.