Seller will be taking a 30k+ loss with this route.325k with 50K down to seller, 3 years of payments $1600/month, and a balloon payment of 215k at the end of 3 years.Benefits to me: (1) 10k less downpayment, (2) with the conventional route, the loan would be at 228k after 3 years of payments, so I will gain additional equity with the 2nd option since I will owe 215k (presumably I will have to refinance at that time).Benefit to seller: she gets over asking price, 50K upfront and $300/month of cash flow.Does this offer and structure sound reasonable?

This is prime real estate, and is just about the last piece of land in this area.I have begun to develop a commercial property that I own with contractor garages, which is the extent of my experience in this space.I'm trying to get a sense of how to structure something like this, with using LP's, and also partnering with a builder, and carving something out in that regard.Does anyone have recommendations on who is currently working in this space and could provide some insight?

There is probably much to gain from that. 

This is solid insight as well @Kyle Barnhart. 

This has been tied up in court and does not really have an end in sight at this time.5.

If your portfolio is large enough, 5% is better.Now, some people believe that this diversification reduces the chances for a large gain.  

I'm an agent and investor in Phoenix so would love to get on a call and discuss how I decided on becoming an agent and give you any insight into the local market!

Jeremy posted some great insights.

By the time he covered eviction costs, lost rental income, and re-renovated after tenant turnovers, any potential gains were erased.Seven years later, his properties had appreciated to about $130,000 each—a 62% increase on paper.

With an SDIRA, you can use tax-advantaged funds to purchase property, and any income or gains from the investment grow tax-deferred (or tax-free with a Roth SDIRA).