If they broke the lease/abandoned the property, I would be able to sue them for rent for the remaining lease term for the period I couldn't find replacement tenants (MA requirement that a landlord mitigate). 

We would give them to Mexican brokers who would take them to Mexico and replace them with card board shanties.

You say they were dealt with, but it sounds like they were poisoned and then trapped in the attic, guaranteeing this situation.

Are they looking for multifamily or commercial (sounds like retail if they are looking at malls)?

@Duriel Taylor, that does sound like a good put together plan.

I would say it sounds like a bad idea, but I'll qualify that. 

Once I can replace my income with rentals I would like to branch out and go farther.  

Sounds like the BRRRR strategy......I think

honestly, your questions indicate you are NOT ready yet. you gotta read more. there are some really basic things you are not getting. also, it sounds like you don't have much money.flipping is...hard. even when property values aren't so massively appreciated like they are now. so much has to go right. you need to know your market very intimately, know your costs to a tee, and have plenty of time to coordinate trades.when people like yourself show interest in flipping in this area, it makes me worried that we are in a bubble....only difference from last time is that you very likely can't GET financing now.

@Pat Bell  Sounds great man!