Alright fine. We'll end the debate in a peaceful truce. Looks like we won't know until it happens...And until we know we can't say anything anyone said is true...Not giving up. Lately I got bored with debating, to be honest.
Anyway... as for your second part. You're basing all this on the Frog Sage Mode requirements. Not all SM have the same requirements.
As for Sakura's chakra reserves, they have never been bad to begin with. Now with the addition of Byakugo seal, she could meet the requirements quite simple. Unleash the seal, let all the chakra go into her body, gather Natural Energy and voila. That's it. And where do you get the idea that the seal will not always be there? The seal is there to stay.
Once again, as I said, you base your presumptions on FSM, whereas we don't know what SSM would require so that we can establish that the potential is not there.
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