But how does that break down in terms of the distribution of profits?

If you were looking to withdraw gains then you would be subject to penalties (i.e. if you contributed $6,000 a year ago and the value of that $6,000 is now $6,600, you could withdraw the $6,000 with no penalty but if you wanted to withdraw the remaining $600, then that would be assessed and early-withdrawal penalty).There also shouldn't be any additional tax liability as a Roth account is for contributions that have already been taxed, allowing for tax-free withdrawals. 

subject-to, seller financing, master lease, option to purchase, private loan, partnerships, heloc, credit card......

There is an entire forum on this subject which you can find HEREAlso check out podcast #364

You can structure owner finance, lease option, subject to, rent to own etc.

However, landlords who still have a mortgage on the rental unit may be subject to extra restrictions.

I really don’t see a subject on BP related to dealing with residential and commercial vendors so I wanted to start a tread and ask peopleHow do you save money dealing with installers, repair companies?

@Lem DiazYou are correct in distributing taxable income, i.e. monthly rents. 

@Jared Wilson Breaks in the chain of title are not subject to opinion... either there is a chain or there isn’t.

An alternative strategy would be to borrow from your plan for the down payment (subject to the limits) and then you would obtain financing and own the property.