You're right about putting main or tobi on the 1st or 2nd move number, but you need to have Hinata on the 1st row in order for her mystery to be used in full effect.
If she's not in the front row, the people will no longer target her with their standard attack, with doesn't give you the breather you need in the 1st round. Both Tobi and the Lightning main are pretty * squishy, and without Hinata acting as the tank, you'll find yourself in some trouble.
But other than that, your build looks solid too. If you don't have Kurenai, you c*e Tsunade. Kabuto's also an option that can work, but you'd have to sacrifice combo potential, as with Kabuto, all 3 of your ninja would chase knockdown.
If you don't have Tobi, things get harder, as it's difficult to counter another Tobi without your own as he'll just dodge everything. You c*e someone like Gai or Kankuro in order to have some DPS with and ability to add a status effect (ignite for gai, poison for Kank). With all of these, you'll have to switch your summons around, as well as your chase. I have the combo simulator linked, so anybody willing to can experiment