Takumi crisis

Go for NY!Corrin, out of those, though I suggest saving him for a better unit later on.

I've had a +res/-hp Takumi for almost a year now. He was great at first, but lost a lot of use when skill inheritance came out, and then even more so when higher quality archers were released (Bridelia, BLyn, Innes). I fed him to my NY Corrin this weekend, and it's been a lot of fun. I threw him in TT for a crap load of SP because he definitely needs the extra skills.
Keep in mind he definitely isn't the best archer or anywhere near it. But he is fun, and he is different from the hyper-offensive builds.
Mine needs a bit more help. Guard Bow+ (def) is needed, and I think at some point I'm going to give him QR3 in the B slot and Close Def 3 in the S slot, which pumps his defensive spread to 43/24 whenever he's attacked.
Again, not the best, but he's different and he's fun, which accounts for a lot in my book.

You could do Takumi in one of 2 ways with your spread:

-Make him AA worthy and give him bowbreaker to be a hard counter to Brave Lyn

-Sacrifice him for CC to a unit such as NY Corrin or a ranged armor unit, or even a unit like Leo.

Takumi has lost a lot of viability since SI hit the board. I still have my +SPD-HP variety, and he went from a main team staple to a niche unit when I started building synergistic teams such as horse emblem (A B and C now, might have a D team coming up if they come out with another troubadour), flier emblem (A and soon B), armor emblem (A and B, C is in the works), and even many varieties of all infantry teams for quests and a few mixed teams, most notably my Arena defense team, which has netted no fewer than 3 successful defends in each of the past 4 arena weeks.

The point I’m stating here is that he doesn’t really have a fit anymore since his attack is almost not salvageable for any special builds and his Fujin Yumi just isn’t a strong legendary weapon. Use him in AA as a niche unit for countering bow units or don’t use him at all, those are really the only 2 options.