That is a quite decent team but I'd say Kabuto is slightly better fit here since you wouldn't find chakra for Sakura until 3rd round at least and not being able to remove debuffs in the first two rounds may possibly cause quite an issue. Other than that, it is probably one of the best f2p options out there.

If you'd like to stay in Fire Main, I'm not sure if this lineup would be as consistent as Lightning counterpart:

But Naruto [Ramen]'s skill which gives crit rate, additional attack and debuff removal may come in handy here. Also Red Lotus Secret passive is highly likely to let your Hinata reset cooldown each round, also since Fire Main having the only 20 chakra t2 initiator skill, it is usable with GNW Hinata's refreshed skill as well in t2. So it might be an interesting team to try out.