My background is residential HVAC tech/installer for 4 years (continue to do HVAC as well)  I quite doing HVAC full time to follow my passion.

Of course buying HUDs is an option but be choosy because you may find a GREAT house in a not so great area.BANK and ESPECIALLY local Credit Union foreclosures are a dream, as owner occupied you can negotiate repairs, new wood flooring, HVAC units can be installed and cost added to the purchase price banks will add New Appliance packages and even BLINDS for all the windows.  

So far they are 6 months overdue, had to install a new septic (poof, profit is gone), and the "investor" owes the other partner 75k for her half of the deal......Do you think it will end well?  

I cut and installed the granite as well. 

And if that is the case would sub metering the property be doable or easier with hot and cold lines already installed for each unit?  

I would instead install a stick to prevent the window from sliding open.

My agent said that as long as i dont install a shower I should be ok with renting it out as an artist studio or something like that.

We did this about 15 years ago, and the contractor installed an ejector pump. there are also simpler solutions, such as a toilet that is made just for this purpose.I will caution you that this may not be the best use of resources.

I closed on my first house with a freshly installed A/C.

I actually had the iphone app installed for a few years but never used it much for the technology consulting.