As long as you can put a couple more green characters in(Kid Gohan is a good sub) and don't have anything weak to blue in there then the fight shouldn't go too poorly. Kid Gohan plus two SSJ Vegeta's should be more than enough with decent levels.
Yeah, I had to take out my SR Master Roshi. He served no purpose in there, so I just put a N Videl in his spot instead. Her stats aren't as good, and I don't have any other R/SR to use [since I'm saving my stones for an event], but it shouldn't be too bad. I've already completed the event twice, although it's been without a drop.
Also:
Important!
Since this game doesn't link with your iOS/Android account [or social media sites, such as Facebook], your progress isn't saved if your data is corrupted or you accidentally uninstall/reinstall the app. Sure, it makes re-rolling super-simple, but it's also a danger since you can so easily lose your entire account.
However, since it's similar to Treasure Cruise, there is a way to temporarily save your data, in-case the game is corrupted while downloading an update or your phone is bricked/lost/etc. Simply go to "Menu", "Device Transfer", and "Create Transfer Code". It will give you a User ID/Transfer Code that's valid for two weeks. You should take a screenshot/sync the image to your PC, or you have the option to email the information to you. Unfortunately, you'll need to continually do it when it expires, but it literally takes a few seconds to do and safe-guards you against something unfortunate happening. At the very least, I'd recommend doing it before any major updates.
