What is Jinbei role in this WCI arc..?

Let us recap back on Jinbei within this WCI arc..
We seen Jinbei helping Big Mom's crave for foods..
Then he told Big Mom that he want to left her crew..
Big Mom asked Jinbei to roll the roulette of fate..

We also knew in Jinbei's flashback that he told Sun Pirates that he want to be beside Luffy..
Then  Charlotte Praline say nobody left Big Mom's crew before..
Only death sentences will be received if anybody try to leave Big Mom's crew..

Then, Jinbei suddenly comes to save Luffy that been captured in the book along with Nami..
He also knew something about Big Mom's Tea Party..
He also knew about Capone's plan..
So all this while, Jinbei was with Sun Pirates where they found injured Pekoms..
Pekoms told them about Capone's planning to head off Big Mom..


Then Jinbei sure that Luffy will listen to him (or agree on what he trying to suggest)..
Jinbei want Luffy to go and meets Capone..
As he knew that Luffy will want to crash the wedding if Sanji can't be persuaded..

Is it a good plan or not..?
So what is Jinbei role for this arc..?
Maybe he would save Luffy from any danger..
Would he sacrifice her own life for Luffy in order to fight Big Mom..?

Will Jinbei join SH later (at the end of WCI arc)..?
Are you guys like Jinbei to be SH's crew member..?

In addition..
Look at Jinbei himself..
He wear Japanese's male dress..
His hairstyle also same as Kinemon's hairstyle..
Maybe he been there (Wano) along with Ace..
Remember that Ace make a straw hat for WhiteBeard's giant crewmember - Little Oars Jr. (Read back Marine Ford arc)..
So.. Maybe they (Jinbei & Ace) meets there..
Maybe Ace save Jinbei's life there..
This is just a theory but the fact is Jinbei & Ace was in Wano Ku Ni before Marine Ford arc..

What is Jinbei's role in this WCI arc..?
What will be Jinbei's role in Wano arc..?

Please COMMENT below.. ^^