I've got enough feathers to start building my Nowi (which feels stupid because all my 10s are blue (Rein, Effie), but I want one to go with A Tiki 7/Myrrh/??? undecided). I decided on DEF/-HP over a ATK/-SPD. I don't have a spare Ike to sac so she's currently running Aether, Fury 3, QR3, Threaten Res 3 (may inherit Fortify Dragons from M!Kana, unless you guys think I should run a 4th dragon (I spent 350 orbs on the tempest trial banner for Ninian and didn't get her).

Anyway, my question is what refine should I run for her? If I eventually pull another Ike, BIke or VL Ike it will go straight to her so I guess I'm building her enemy phase. DEF or RES then?

Bonus question, I pulled a dupe Zelgius on that skills banner using my free pull, should I merge him or does he have any skills that would benefit my merged units? (A Tiki, Camilla, Rein, Effie, Nowi, could also start an Elincia project)