(Just re-reading that shows how green I am here, lol).So say 10 year term, amortized over 20 or more years, all principal no interest? 

If you eat enough Pittsburgh salad you do need to have these pretty accessible.  

However I've also read that commercial real estate is a huge grind and "only the strong survive / dog eats dog" type of stuff.

Give a man a fish he will eat for a day.

@Dwight Green Jr , IMO this is NOT a good strategy.  

I doubt repairs are only 2,880 per door with 104 doors.Carpet and paint alone depending on unit sq ft size would eat up 2k a door.I haven't even gotten to  mechanicals or the exterior parking lot, roof, windows, water and sewer laterals, and  a host of other issues depending on when the property was built.You can have big rewards but huge losses if you do not have the experience.  

If you are completely green to building websites and scripting languages I would just pay someone to do it.

You can't have your cake and eat it too. 

I was young and green!

I don't have a lot of capital at the moment so the 15% down on the first house will eat most of that up, but I have great credit.In your opinions what path would you take if you were in my situation towards this goal.