Board Thread:Event Help/@comment-32906994-20170820172124/@comment-32510639-20170820193436

Some characters are worth of investment, like Goku SSJ4 and Gogeta, almost every dokkan exclusive character is worth of investment.

You said you have 15 elder kais, you can use 9 on Gogeta and 5 on Goku SSJ4, that way both will be at SA10 and you will have 1 elder kai left, just in case.

If you are planning on doing the  Goku LR grinding, STR and TEQ units will help you a lot if you thanks to Bulmas LS. Use the STR units on the last stage, use Grandpa Gohan as leader and use mono TEQ  with Bulma as leader on the 3rd stage.