EzAad:

The issue isn't a "beginning" but freedom or inherency - does G-d eternally totally freely do these acts or does He eternally do them because He must do them? If the former, then the acts eternally exist from non-existence and cannot be G-d unless the same can be said of G-d, which would mean the basic existential limitation on G-d. If the latter, then G-d is bound by necessity to do these acts, an essential limitation. So, it remains a problem - either these acts cannot be G-d in any sense or your "G-d" is limited.