I'd say continue saving. The events this lineup are not very conducive for maxing out the fuku deals (unless you buy all refines and power up). Angel of God konan is still strong but she has some pretty easy counters like Itachi edo tensei that can both put her to sleep and hard nerf her damage. There is the other option of spending into Sakura gifts for deidera fragments to 4 star and then skill experiment on (or outright get). He is still strong and has some pretty decent lineups.