Got a new one in Sept and almost half my payment is going towards principle already.So this isn't a which is better comparison, it's a how do I get a 30yr loan with a partner question. 

Figure out what you want - would you like to be released from the lease and move to a place with a knowledgeable and ethical landlord, or do you want to stay there and be firm with enforcing tenant-landlord law with him?

No title insurance could come to bite you at the end too when you sell.But overall it seems like you're on a great path to success with the right work ethic and team in place.

Agents who don't follow the legal (and ethical) process that we are ALL supposed to follow is a red flag for you NOT to use that agency..

Other instances they stopped paying and the fees and interest collected goes up quickly including legal etc.I hold the note on a property that the unpaid principle balance is $65k but it has $85k in late payments, fees etc.

In the instance of a BRRRR investment, and the owner is able to cashout his principle up-front, would it seem fair that (assuming a 15 year note), I would get the same proportional share on the property once it's free & clear in 15 years or if the house sells?

So I have stuck to that principle and it has worked for me even in my next home (personal residence in CA).The obvious choice (Call it CHOICE #1) would be to look in the same Chandler area and see if there are any deals there.

(Seller closed on the property in 2017 for $420,000)  - take over note ( current balance: $295,000 )- Note terms are 6% no balloon payment, monthly interest and principle payment total is $3419.43I am have never worked with notes but this seems like a good deal.

Do I write an addendum to explain that I am acting as a principle not a broker?

I believe that while it's no taxable event to transfer your title into your Entity, transferring your property title out of your entity back to you may cause you to get taxed for the balance of the loan or at least the principle part.