Again, I have to recommend:

Treat the Orthodox like they don't exist. Treat them like the hell-bound schismatics they are. It doesn't matter if you're dying without the Sacraments -- just make an act of Perfect Contrition and hope for the best. The Orthodox shouldn't be an option for any devout Catholic.

They are basically the same as Protestants. Their outlook for salvation is similar. How is Schism any better than Heresy -- and I'm sure the Orthodox have fallen into multiple heresies over the past 1000 years anyhow.

You can't just deny one dogma of the Faith. Deny one dogma, the whole Faith unravels. Either you have the Faith, or you don't.