I originally didn't intend to make it short.
But Cross is likely to fast-forward the plan.
I'm also not making it easy for anyone to get what they want. Ren won't find it as simple as beating Doflamingo is enough to clear the island for example. I'm not adverse to 'hindering' other people in this case, since everyone's objectives are different, it's essentially a win-win-win situation for the 3 of you.
The condition did mention that you can only get Hobi if all the crew members are defeated. So I'm sure you see the idea