Not safe at all, since hitting those crazy ass 99,999,999 damage with some LR's is obviously modded. And same goes for punch machine and hyper clearing EZA battles since that has a ranking. I got 2 accounts banned just to test out. And my old account was banned for the WT of that time.
Anything else, you can just go ahead until you build the team you like/love and then all you gotta really turn on is dice 1,2,3 xD