Is this a viable path to the nomination for Sanders?

[Panhandle Progressive]

Sanders getting enough delegates for the nomination is still technically possible but it would require a complete collapse by Hillary Clinton sometime soon and I don't see that happening.  If she does well on March 15 there will be no path at all.

This is correct. She should have somewhere in the range of 1500-1600 total delegates once Super Tuesday part II is finished. At that point she will have under 900 delegates remaining for the clinch.

[Panhandle Progressive]

2.  Only people under 30 years of age are allowed to vote in remaining caucuses/primaries.

This one is probably even worse, especially for Southern states and others with high minority populations. I'd assume Clinton would still win in these state primaries even if only under 30 were allowed to vote.