I will run through an actual deal soon, just trying to fine-tune the model in the meantime. 

It's fine to track these in a separate system since...B.

It eventually worked and the windows opened and closed fine.

We don't hide that in the fine print!

if I borrow 100k for a BRRRR (purchase plus rehab) and borrow the money for 9 months (purchase and 6 month seasoning before cash-out refi) he is totally fine with me giving him a lump sum after 9 months of $105,941. 

I also think we might have a couple more building age relate issues but the paying tenants like it just fine and stay multiple years so I often wind up sending S8 tenants away especially when they want to make an hour drive because they have a city voucher. 

@Benjamin SulkaI think it's fine to present your analysis, but you can't "convince" anyone of anything. 

@Stephen BruceI am not sure you even need a JV agreement, an operating agreement will work just fine.

When there is no realtor involved, it could be fine, but it could be disguising the fact that there would be fraud going on or that the purchase price doesn't equal market value (i.e. two related people selling a property one to another at an inflated value, etc.)

As long as you are operating within the law you will be fine.7.)