@mladen Regarding the communication that this post has been Solved, I see the scope of a solution differently.
The expected solution would result in a functional Qubes installation in addition to successful suspend/resume.
The actual result with the image I tested did not have a working DisposableVM or qubes vm settings utility that supported creation of standalone VMs. The image I tested was pre-RC1, and so it is not unexpected that the system does not work.
So in my opinion there is not yet a solution, but a solution is expected with the next release of Qubes.