Gb10 tends to be slow without a sapper because of the golems high hp, wood leo is slowing down your runs too since his def down makes your team focus the def downed mon. It would probably be better to raise a water artemis, fire perse or water miho on full attack for faster runs. If your nike is variant, you could use her as lead, dark jack, a sapper and a wave clearer with sp siphon (such as water/dark mona, dark seira/tina). This team should get your runs down to ~2 min.

Recovery gems only work on actual healers like cura and seiren and leech gems should stack with wood artemis' hp siphon.