You're close to sending your project. When you're trying this hard, you know that the little things can make a big difference. Black Diamond's Dogbones are bartacked to keep carabiners oriented the way they need to be. Don't blow the redpoint because of a rotated biner and botched clip. Spectra Dogbones are 12mm and Nylon Dogbones are 20mm.
Bottom Line: Ultra-durable, divinely strong and bartacked to keep carabiners properly oriented.
Review 'Black Diamond Dogbones - Sewn Dynex and Nylon Runners'