My Helena ended up with mincost and 8/10 skill. Good enough for me I guess.

I really should've farmed for more revival crystals during Rowanna's revival since it had the 1.5x drop rate. Hopefully it doesn't take me more than 5 SCs to get to 150. If I'm desperate, I might go for 250 RCs for that -1 UP, but that's only after I'm done with the black valkyrie.