The problem with incorporating Gakido and Ao into the same team is that they'll be fighting for Knockdown Chases. Therefore, you may need a pet to create Knockdowns, as well as another character to created Knockdown, preferably off of a Low Float or a Repulse. A couple of mains fit this role, as do Kakashi and Hinata. If you can successfully incorporate Gakido and Ao into a team, it'll greatly benefit your Mystery breaking potential, as Ao can acu on both his Chase and Mystery. In additon, Gakido is an excellent cleanser, which can turn the tide in a battle if used against a heavy CC team. Ultimately, it's difficult to add, but can potentially be worth the effort.
Hope this helps! :victory: