I'm thinking General, but I want some feedback. My Inigo currently has Armsthrift, Pavise, Galeforce, Sol, and Counter. I'll probably trade Pavise for Limit Break once it comes out though. I would give him boots if he were to be General to compensate for low move.
I'm having a difficult time figuring out why you would allow such a pairing. Doesn't work for me. But:
Armsthrift Axefaire / Swordfaire Renewal / Vantage Galeforce Luna / Astra / Sol
Astra if using a brave weapon, otherwise Luna. Or you could swap out Renewal and your Luna/Astra proc for Vantage + Sol combo. The divine axe Helswrath is recommended with Axefaire. Otherwise Ragnell w/ Swordfaire.
In the future, try Frederick or Virion... or if you wanna go mainstream, the overly popular Chrom x Olivia. Imo the first two are better in the grand hull.