The cons might outweigh the pros until you are closing deals in high volume.

The fines and hassles far outweigh the money you think you are saving.

The new owner will need to pay those debts, so adequate research before the purchase is critical to avoid obtaining a property whose debt outweighs its overall value.If no buyer is found during the upset tax sale period, the county's Tax Claim Bureau may ask the local court to schedule a judicial sale.

When even just the potential upside drastically outweighs any downside, make those decisions instantly.

Plus electric from one to 3 meters.The costs to go that route could outweigh the possible benefits. 

The value of having a real estate license as an investor definitely outweighs the costs associated with it.

Yes, we'd both prefer a SFR, but the allure of being financially independent by sacrificing for a couple years outweighed our desire for short term comfort...

I know in the worst-case scenario, if spend money to make the repairs I can pull a HELOC/ private loan and in the long run the benefits outweigh the negatives and all the expenses (as this is an investment).

Seems like the prices are near the top and from what I observed (I honestly haven't researched it in depth), it seems like the renter's rights outweigh the owner's rights (just had a friend in San Diego take 6 months to evict a tenant who wouldn't pay the rent). 

Both units will need to be rebuilt as they are beyond repair, or at least, the cost of new construction outweighs fixing them.