Board Thread:Questions and Answers/@comment-33222303-20180415125600/@comment-32271305-20180415133620

SSBKK Goku would be at SA9 with nine Elder Kais, and you could also get more from the Baba Shop, unless you've already bought all of the Elder Kais available.

STR Grand Kais are also obtainable from the Extreme Z-Battle event. Even if you can't beat all of the first 30 stages, you can still get STR Grand Kais by beating some of the easiest ones.