Iam a certified 6/6 bulky believer now for infinite mode. Bulky is the most hollistic and best upgrade you can have, followed by tactician I think. Chikitas ability and or tactician makes it bearable to give your backline permanent shackles as well. With kabu and slag as village monster plus krog in the team you got three bulky already. Its my least cheesy best build so far. Chikitas average speed abillity is one of the strongest and most versatile abilties which is criminally underutilized I think if you combine it with shackles or slag with notorious low speed.
Using seras for dps now it is no skimander though, krog for debuff length extension and debuffing with his aoe attack. Reforging all the items because I had bad luck with item merging with the monster lead to hydrims with 2.6k HP during combat.
everybody in that team is bulky but chikita