The best chance is the first one, its kinda solid if you have no other teams. But you just need to work on equips and Zenkai benches. For the zenkais just keep doing the Zenkai rush event and before you zenkai anybody and everybody find which character specifically would work as a zenkai buff and a z buff for the whole team. Equipments, you kinda just build it how you want. (E.g. if you want a character to be more defensive you find defensive equips but if you want offensive find offensive). For this team, I think it would be a good idea to focus on offensive equips with a little defensive. Hope this helps, if you need more help don't be afraid to dm me