I'm thinking of Sage Naruto, Ginkaku, Hashirama and EM which could get a 7 combo (Primary Lotus + Shiba, combo which can start from whatever character) and run EM with the super lightened jutsu so hashirama gets his barrier off first round (you will get 60 chakra, 20 from the start, 20 from Ginkaku and 20 from Sage Naruto)