I've used Kushina Habanero-Edo Deidara-Sailor Sakura-Water main with 32242 talents(summon Giant Katsuyu) , but believe me it's not that great . Both Kushina and Deidara are great ninjas but don't synergise that well together

Right with the point. Wait until you get other exclusive ninjas like kisame fusion, angel konan or earth kakuzu. And use deidara, unless you got jonin minato, use kushina.

Opened by mistake, delete it.

Try to remove sailor sakura and to use jinpachi, remove regenerative healing jutsu and use shark bomb and you will find a decent lineup. Using nature energy gathering just to get chakra is not that useful. They will target with ccs your main very likely so you will not be able to use her in round 2, but if they do so then they won't target deidara and this means you are able to use him fully both in round 1 and 2. Round 3 almost for sure if you played well, you are free from ccs and a shark bomb with 90% ninjutsu boost hurt a lot.