Deathlessness

[Andro]

if you get good at it, you can do it all day while you can do other things

This still doesn't make the day longer than 24 hours

You just squeeze more into the given frame...

About the "Black Sun" - you can search the forums, I thinks there's quite a bit here on the topic. The symbolism associated with it is known in East and West alike. The National Socialist movement (as well as other movements and organizations) took a lot from both Eastern and Western occultism. Where do you think the Swastika (a Black Sun symbol) originated from?

And "Vril" is just another name among many other names, for basically the same "thing". See THIS.

[Andro]

total suicide and death of all your bodies: physical, astral, ether, etc

As I see it, this 'total suicide' (of the bodies) is eventually required (or it may also happen by itself, as per Cyliani), but it is only a portal/gateway to 'something' else entirely. It does not mean "dissolution into nothing" or anything of the sort. And there is no 'nothing', anyway... Even if we negate EVERYTHING, the last thing we negate is negation itself

Also, the 'total suicide' concept is a bit tricky IMO, because one can only kill what can be killed (i.e. things that have a beginning and therefore, an end). Only bodies can be "suicided", no matter how rarefied they are. The Self, however, is immune to time.
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I.M.S.I.