None of those........if you are strictly building an AR10 for hunting, build your own with lighter componants, like an 18" barrel with medium to light profile (JP Enterprise makes a very accurate and light weight profile barrel), light handguard (like a Centurion or JP Enterprise), and minimalistic stock.
If you wait a few months, I know of at least one manufacturer that will be coming out with an AR12, which uses a large format lower receiver (DPMS AR10 lower), with a modified, lower profile upper and BCG, that is compatible with everything else AR15 (Stock, handguard, etc.). You can acheive a larger format 7.0lb hunting stick (in .308, .270-284, .260, 6.5 CM, etc.) with this set-up. Likely available the end of Summer.