Trying to come up with a NY Corrin Build

As the title suggests.
The only viable bow user I have is B!Lyn. I have a +res/-hp Takumi and a crappy +def/-spd 5* Jeorge, so they're no help.
I figure even if Corrin isn't that great, he could still be fun, especially since I'd finally make use of Takumi' s close counter.

Firstly, I've already thought of Slaying Bow plus Ignis, and while that seems cool, I don't think it's what I want to go towards. I want a completely enemy-phase oriented unit.

So my intended kit is this:
Guard Bow+ (def)
Drag back
Bonfire/Ignis (unsure here)
Close Counter
Threaten Attack

Where I'm stuck, though, is the B and S slots.
I have a few ideas, so I'd like some input.

The first is QR3/CD3, giving him 2 attacks and +6 to def and res (so 43/24) whenever he's attacked by anyone.
The second idea is QR3/DD3, making him a long-range fiend on defense (49/30).
The last idea is Vantage/QR3, which just seems nasty, like a poor man's ranged Hector.

Let me know what you think.