Defensive LA Roy

Today I pulled a +res/-spd Roy and I'm looking to build a guard bow Roy. My first question is about the refinement. Do I keep with the resilience boon and make it even more powerful, or do I boost his def to a more rounded 30/33 stat line?

Ultimately, I'm thinking of using the quick riposte seal along with Guard 3 in b slot. Specials could be an issue with a unit this slow, so I think this would be the safer option. Ideally the a-slot would be distant defense, but in the meantime, what would be an effective alternative? I may forgo qr for the time being and stick with dd seal until I get a-slot fodder.

Very excited for this unit. Any additional feedback or suggestions would be greatly appreciated!