It dumps forever chemicals into the water, rats chew on them, and I find it difficult to believe that PEX will last more than 25 years.  

wow guys thanks for the replies and a lot of good thoughts to chew on.

Definitely something to chew on for the future! 

But, if the 2nd floor units are residential, then you may be able to handle a vacancy for some time as long as those two units are filled.As far as biting off too much to chew, it seems like that may be the case here.

I've seen dogs chew through it (beside the meter box where the fiber drop ran to the house), landscaping crews routinely cut it, sprinkler installers, homeowners clip it while trimming bushes/trees, even seen a case where wasps chewed through it!

The ghetto chews up and spits out coastal investors who've got no realization to what like in the Cleveland ghetto is like.I suggest all out of state investors look over The Ultimate Guide to Grading Cleveland Neighborhoods before spending any money here.

I think it's an interesting concept, even though I'd rather chew broken glass than actually live like that.  

They drive jacked up 4x4s, chew tobacco in their sleep, and smell like diesel fuel. 

I did have a relative who let her friends with dogs stay in her apartment while she was abroad for 6 months and the small dogs chewed a hole in the bathroom door. 

Did lots of research and planning, but I may have bit off more than I can chew.