Very few repairs and very little drama.  

Key metrics include After Repair Value (ARV), Repair Costs, and Maximum Allowable Offer (MAO).

Come even the slightest ripple (an increase in property insurance, an unexpected repair, etc.) and suddenly you're drowning in a sea of negative cash flow.Also, are you including both professional property management and vacancy in your operating expenses?

Run the numbers, have the realtor run some comps and figure out the ARV (after repair value).

The areas I lack experience in would include construction, repairs and handyman work.  

As far as I understand it, when the repairs, updates, holding costs, etc. take place have no bearing on anything.

If you are tracking depreciation for purposes of repairs and maintenance (like anticipated timing of a new roof for example), you could probably get away with using excel and then just manually booking a journal entry.

Repairs should be 10%You can get rid of Capex though, as no one really worries abot it on SFR.How much research have you done on property taxes?

Inspection reports will always be a very meticulous report of all items that need to be repaired, or suggested to be repaired in a home. 

Landlord says I will do a full replacement, but not minor repairs.