(Note 1) I couldn't find a match to indexed descriptions, which most likely means the parcel was subdivided (e.g. description says 29.035 ACRES and becomes 1A lots) or combined (e.g. 2 TRACTS becomes 10.65 ACRES)

and that's just gas.On the flip side, you can hire a K&B superintendent for probably less than a $100K/year, get him his GC license, and he can manage 100+ home tracts and get dozens of homes completed every month.

Quote from @Christopher Teal: Hi Christopher,Here is a mockup of SFH's at the density of the close tract in the picture.You may have drainage issues that take up valuable building space for ponds and swales and etc..The feeder road into the place looks like it's small and not well traveled.I put in a kids play park, to give the tract some sales appeal, plus the area seems to me not best for housing.Look at the width of the feeder road into the other tract and look at it superimposed onto the country road.Do you have city water, sewer and elecric in enough capacity to build as much as you want. 

You can pull lists with them and they will skip tract them for you.

·In about 30 days, I began selling the now subdivided land in 40-acre tracts.

No, the 5% down is only for low to moderate income tracts. 

Develop tract lots to sale.  

The average rent to price ratio for the entire municipality is hovering at 0.67% and has been steadily rising for the past few years.I would focus my search efforts on the western side of town if you are looking to maximize cash flow, just be carful about not investing in a part of town that is considered high risk.Map below should rent to price ratios for census tracts in Birmingham.

I then associated each parcel with a census tract to get the census reported median gross rent for each property. 

Here's a description about them:Created by the Tax Cuts and Jobs Act, over 8,700 tracts of land across the county have been designated as "qualified opportunity zones,” providing new and compelling tax incentives for rethinking where and how to do business.