You'll probably want a 1:1 rotation, using Skullcrusher, Toragi, Rathalos, and Ghrush. That gives you double ally-protect and Leech. You'll want Skullcrusher to be slowest, and Toragi to be second-slowest. Toragi wants to delay his A3 to the second attack, so that Skullcrusher is protected.

The missing piece is a debuff/stun cleanser/blocker. I don't see anyone obvious in your list. Take a look through your roster and see if there's anyone I'm missing - you ideally want a 2-turn block debuffs champ.

I can make that happen, would you recommend regen or life steal for toragi and skull crusher also I looked through all my champs and best block debuffs would be madam seres or Odachi 

If you can keep Leech applied you won't need lifesteal gear.  Stalwart or Defiant would be your best options. 

Odachi can work as a block debuff champ.  You'll need to adjust when he's blocking debuffs though.  Either block the stun or the Slow against Spirit and have Rathalos eat the stun there.  I believe Odachi also has an increase defense which will be helpful.