So we have a couple issues consistency wise here.
We can realistically use a 1.33x amp for Galick Gun and Final Crash and make it work. Assuming that KKx3 Kamehameha has no amp it can work fine.
Vegeta 18,000
~Galick Gun 24,000
KKx3 Goku 24,000
~Kamehameha 24,000
This works out fine...