So just something to think about.I would be looking hard at their financials, and I would look hard at what capex is needed. 

If you hire a PM, your financial account structure can be simpler.If you plan to continue purchasing rentals, I like some key accounts at the "management" level (income, opex, tax, owncp, reserve) and only have 1 checking account per property to prevent having 100 accounts and unnecessary complexity.

Do you have the financial strength to hold/carry these lots if they don't sell quickly? 

Giving them a financial hand to leave could be to your benefit, but I would keep that in my back pocket until its necessary. 7.

Often times, their approval processes are slow.Credit Unions - Their member structure also subsidizes their financial structure so they can also be a source of low-cost financing.

Given your financial constraints and the property's ineligibility for historic tax credits, this approach allows for reinvestment into assets more aligned with retirement account rules.For future real estate investments, you don't need an LLC for tax reasons.

There’d need to be a lot of rehab work/managing that would require you to put in that many hours.From a financial perspective, it seems like the highest leverage way to keep buying more properties is leveraging your W-2’s and then being work optional.

I want someone who is not only financially capable but also shares my long-term vision for the properties and has experience with seller financing deals.2.

However, sometimes investing is more than just the financial return.  

It's been great, but I'm not able to financially benefit from any of that money.