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I don't have a scale, so haven't weighted it.
I used 1.9oz sil... so it will be on the heavy side.

Maybe this will help (click any image for a larger version):
http://gear-report.com/wp-content/uploads/2011/01/Ogee_layout-235x300.png

When set up in the standard configuration, it looks like...

Sounds like a lot of thought went into this, indeed.
Can't wait to see the pictures.

FWIW, I just finished a long asym tarp and am struggling a bit to sort out a preference in your two options....