But before this purchase I informed well, and I found a lot of useful information here: https://www.a1autotransport.com/auto-transport-financing/ related to shipping, how the whole process is going, etc.

I'll keep ya'll posted...I think you’ve missed the whole point of the process.

Quote from @Leo Alvarado: Hey guys, I am currently in the process of closing on a two unit duplex that I will be occupying while renting out the other unit.

This is part of my loan process - a discovery and strategy session with the client to understand their scenario, future plans, and overall situation so I can structure the loan to fit into it. 

What tools or processes have you implemented to estimate rehab costs more accurately and avoid scope creep in BRRRR projects?

Enjoy the process, and may your journey lead you to a rewarding and successful outcome!

A process is far more important. 

What are some standard process or contracts needed before the partnership to make sure both parties are protected?

I'm in the process of meeting and vetting two (for now) Cape Coral builders who might have the expertise and bandwidth to take over partially built projects like yours.

Quote from @Reginald Glascoe: I definitely don't want to start this process over again.