Silver-Linked Footguards offer more stam, but less str. You may also want to consider the leather BFD quest legs. More stam and armor, some agi instead of int, as an alternative. LFH and stam cape and belt, if you're chasing a pure stam set. Other than that, as you mentioned, BoAs and AGM.
I'm not sure how much extra armor and physical damage reduction 3% is, but I'd imagine a reduced HoJ CD would be more useful.