Because there are nuances to seller financing, a lot of space would need to be devoted to covering the subject to make sense, and that requires sitting down to a cup of coffee for a long discussion.

Through all of those there were still posts on the other subjects it just morphed as far as the percentage of content. 

Sales Tax Breaks: Construction materials and services may be subject to lower tribal sales taxes—or exempt altogether.4.

Not going to kill it on the rental income, but if you sell it subject to, there is a lot of equity.

An LLC shields personal assets from business liabilities, while S-Corp taxation allows you to reduce self-employment taxes by taking a reasonable salary and distributing remaining profits as distributions, which aren’t subject to payroll taxes.

So often rentals don't have taxable income; and once they do it's still not subject to the payroll taxes paid by W2 wages or on self employed income. 

All sec8 rentals are subject to review and approval by the housing authority issuing the vouched.  

If you want to develop it, I can refer you a lender that will lend on a completed subject to appraisal but you'll be limited if you just want it for the lot.If you simply want the land as part of your property, you have more options including a HELOC which you can still use for development down the road. 

LOL  a softer way to say this is if your simply looking to become a landlord this is a very easy subject to read up on and learn and understand U do not need to pay someone to teach it to you. 

This is a complicated subject, and I'm not 100% sure I'm following all of your points.