Would you be open to experiment? if so, may i suggest do 1 or 2 Rage of Halone combo and then straight up drop shield oath, not even putting on sword oath. and then use fight or flight to buff up your Goring blade+circle of scorn. Use a rampart to get yourself that +20% mitigation from Shield Oath if it pleases your healers

it sounds crazy right? but you don't benefit from sword oath until 9-12 GCDs later, since it only give you additional Autos. So establish your aggro and then drop shield's -20% penalty, (btw, dropping shield does not eat at your gcd) get about 2 full rotations (pot+gore + circle of scorn, and royal authority) in and pop back to shield oath.

Also you mentioned getting 2 Circle of scorn in your Fight or Flight. That's great, but if you use FoF just before Goring Blade, you can safely get 2 Goring + 2 SoC within 1 FoF