+Spd Hrid merge or DC fodder ?

Both my Hrids are +Spd (one is -Atk and the other is -Hp). I really like his playstyle but I don't know if I should merge him or fodder off DC since the merge would not add much viability to him (the +Spd/-Hp one is more or less a neutral Hrid anyway).

If I choose to fodder, I have some DC candidates :
- A +Def Myrrh who's merged to +1.
-Ares (+Atk and soon to be +10) who would be quite good with vantage and Brazen Atk/Def seal but I fear it would not be enough to OHKO the many powercreeped new units.
-A +Def/-Spd Keaton (but maybe he would be better with a cheaper build).
-A +Res A!Tiki that I really like (I run her with lightning breath and Steady Breath but she might be good with her legendary weapon and DC).
-Zephiel who could be quite good with his refine and could possibly be +10.
-W!Chrom who I could merge to +3.

I would prefer to fodder off DC to ftp units who I could merge up to +10 in order to maximize DC's profitability (maybe Gwendolyn, Oboro, Sheena etc.) so if I forgot other good DC candidates please do tell me. I also have one spare OG Hector so I have 2 DC fodders.

If anyone is willing to help me make my decision, I'd be grateful.