I know I already mentioned this, but @Mordy Chaimovitz...If you can get by with lower cash flow and invest for the long-term generational wealth (aka appreciation) in nice neighborhoods, that is the way to go, but it's tough to get by at times -- at least it is for me.Just know everyone's situation is different, and you should do what is best for your specific circumstances!

It’s a low-risk entry into real estate with built-in cash flow potential.

As others have suggested, you could get a conventional or FHA loan if you want lower down payment options.

That means their pricing tool is designed to price beneath the rest of the market, which drags the entire market down, especially when combined with their algorithm changes a couple years ago that made pricing (IE lower prices) the #1 factor in ranking.Even if you use an external pricing tool, it gets dragged down by the people using Airbnb's pricing. 

My question again stems around using seller financing to allow them to receive a consistent monthly pay of X amount and delay/lower their tax bill in the short term instead of going through a lender to borrow 800k+ causing my mortgage to be significant part of our income roughly 40-50% of take home -  which we are approved for LOL.

Markets like Texas (San Antonio or Dallas) or North Carolina (Charlotte) could offer better cash flow with lower costs.

Typically, higher income areas have lower crime, more amenities, better schools.  

A 1031 exchange doesn’t apply, but funding through a self-directed IRA can defer taxes, though profits from debt financing may trigger UBIT.To reduce taxes, consider forming an LLC for better expense deductions, offsetting gains with investment losses, or holding the property for 12+ months to qualify for lower long-term capital gains rates.This post does not create a CPA-Client relationship.

You could also get a line of credit for about $150k (you should be able to borrow 75% of the value.)The reason I suggest this is…1) you save $40-$60k in selling costs. 2) you have a lower blended interest rate (2/3rds at 3.25% and 1/3rd at 7 or 8% instead of the whole $500k at 7 or 8%) saving you another $1k/mo in interest. 3) you only pay interest on that $150k when you actually use it, not from day 1  Unless you hate this property, or want to buy something you can’t afford without selling, that would be my plan.

If your current lender is open to restructuring, you could negotiate better terms (lower rate or extended term).