Looks cool (although I question the "relatively cheap" part, since it's possible to build a great ELO deck for around 20k.)
Kusuri is a pretty obvious choice for that 2* slot though, isn't she? She can provide a little bit of DR which gives her great synergy with the Frozn. She is also an excellent bait card and threatens KO with a furied Tsubame.
I have tried Kusuri in a Fang Pi Clang half deck and I must say she is in my opinion a great 2* card that I recommend. I am not a pro but I got from 1,000 to 1,200 ELO with her in my deck in one afternoon, she works.