Daniel_M
WKR
I think the gap in your ounce per yard difference is a bit too big. Not positive but pretty sure. But I do think it is overkill. Bomb proof but over kill.
It's definitely possible, I'm a user/hunter not a gear maker. My numbers were search based so that's what I went with. Either way, the lb for lb gaps above are still the same.
Another peak shows 500D being a 7-8oz/yd fabric, 1000D 9.5-14oz/yd. Depends on the weave and grab/pull strength.