But I do not really get your point why you should not stick to downloading the current stable 12.2 versions and update from there? Is there something specific you are waitng for in a newer version?
I am trying to avoid having to run an update that might be 500 MB or more.
Ah I see

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they should stop maing newer and newer and newer, once installed it is already outdated....drives one crazy

)
But having used the 12.2 installation DVD I do not have the impression that I had to update 500MB afterwards (however I admit sometimes it is hard to remember what (amount of packages) was updated once you start an update)