Personal Property: $30,000                    Personal Liability: $300,000                    Replacement Cost: Included                    Medical Payments: $1000                    Loss of Use: $6,000                    Property Damage to Others: $500                    Mold Property Damage: $10000                   Mold Liability: $50000                  Tenant Pet Damage: $500                  Additional Interest: Myself (the landlord)2) With above coverage added to renter insurance, do I make it mandatory for the tenant to have a separate pet liability insurance?

This includes the unintended consequences of chance occurrences.  

Put in about $25k of improvements, to include 2 unit rehabs, new roof (mostly covered by insurance) new paint, and eliminated one unit.

I don't know how much siding is loose, but assuming we're talking about a few panels of vinyl, I could easily do everything on that list in one 8 hour day including picking up materials.

Any specific clauses that should be included in the case someone bails and the other 2 have to be responsible?

Others say it would be included.

Hope BP'ers can share their experience and point out if I need to expand my research scope to include other funds besides the list below. 

I have a friend who lives in California but is licensed in many states including Puerto Rico to do mortgages with Sunwest. 

This way, you may learn the ropes and obtain practical experience without taking unnecessary risks.Examine many approaches to real estate investing, including wholesaling, home hacking, BRRRR (Buy, Rehab, Rent, Refinance, Repeat), and long-term rentals.

Once it's approved, a sheriff will serve the eviction notice to the tenant, and the paperwork will include the date and details for the eviction proceedings.If you prefer to use a professional eviction service feel free to DM me for a few references.