Hi there! Can you provide what ninjas and summons you have right now? Maybe post a screenshots here so other people will be able to help you create or form a good team for your hashirama :D

I had a team with Sage Naruto, Killer B, Hashirama and fire main with orange bird as summon i think.

Yes bro! That's one of the strongest Lineup for Firemain, Hashirama with Sage Naruto, but instead of Killer Bee, they're using Iruka .. I've been using my Hashirama as Ninjutsu Booster for GNWs, together with Pain - Tendo and Konan .. I'm also working on getting Naruto[Sage Mode] for a long time, but those Wheel Spin Events always drains my coupons, I can't resist myself from spinning xD

Each lineup has their own strength and value to it. I personally would prefer bee over iruka due to the lineup being more versatile.