Paying taxes and maintaining the property are elements of the 5-year SoL under Sec. 16.025. 

We are buying a package of 5 homes.

Maybe some element of timing, such as having x# of days/months to change categories, terminology?

Hit up parks that are in the middle of replacing older homes with new ones - we grabbed a 5 home package deal for $12k last year doing that.

I am a package delivery driver, that means I have 8-12 hours a day of time to listen to audio books and "drive for dollars".

If the property is solely tenant occupied you will be looking for a Dwelling/Fire Policy (may be called a Landorrd policy or similar name) or a commercial policy such as a Businessowners or Package polciy.Most homeowers or dwelliing/fire policies include:1.

Most software packages allow you to set up a Portfolio for each owner, which you can then list multiple Buildings under that Portfolio.So, just create a name for your Portfolio.

So even elements that don’t appear damaged can be contaminated.

A little reading on the elements of adverse possession can guide your decisions, -until you decide on the method you intend to use to acquire the property.   

While not a formula (some landlords don't have cash and will not give TI or give very little, vs. a REIT or larger owner will gladly give you a large TI package as it is amortized into a lease so they will be looking for longer term commitment like 5-10 years) we can probably give an idea of ranges in specific markets depending on type of landlord.