I think there are really only 3 options:
1- Team break where each person buys a 'spot' or more than one if they choose. Then, every card that is pulled goes to the person who had that team.
2- Hit break where people buy spots and the order of the cards go to the person in the order of their spot. This way tends to end up more fair as there probably wont end up being a hit from every team.
3- Box split where everyone who buys in gets a full box to open themselves. Or if G wants to do the break, then they just get all of the cards from their allocated box.
I am pretty sure that even though you are arranging this through Cherry, you aren't allowed to organise it on OCT. I mean that you aren't supposed to have people posting their interest in a thread or pm to work it out!
I think you would 'possibly' be able to make a post about what you are planning to do, but you would need to make sure all discussions/arrangements are made via email or another site!
I could be wrong, but that is my take on the rules.
Best thing to do is to speak to the mods BEFORE trying to get it moving on here