Let's assume end of Frieza saga cause as I said, to me everything else is fanfic..
Rayden would probably be stronger then the kais but not by much. (He's badass but the gods are all about the same power level..) That puts him somewhere in the faccinity of 700,000?
In non-super form Goku would have a hard time, he'd have to use KO-Kan and may well lose this fight. This is assuming however he cannot control the transformation. If he can. Then well Kakarot.. FINISH HIM! 😂