I was on a Senate Steering committee way back in 85 on how to deal with all the platted antiquated lots in CA. there are millions lots created before the modern rules and these lots exist today but many are not buildable and are traded back and forth from tax sale buyers to retail buyers who dont realize their 5k lot in CA is non buildable.So there was a big conference in FT.

They can help you save time and fast-track your learning, rather than starting everything from scratch.

Your numbers are way too tight, especially in today's environment.  

If sold today they would bring $2.1M.

The number of defaults is too small to worry about, at least today.

Most will be 30yr fixed, but you're still going to need 20%+ down and will be 1-2% over what you see quoted as "today's 30yr fixed mortgage rate", which is usually the ballpark for someone buying a primary with 20% down and 780 credit. 

There is no hard and fast method , besides experience . 

I'm going to do this tomorrow as I need those forms by Wednesday, but I'm trying to avoid wasting that money (although it's arguable that it's still a good deal).I've emailed support, but they did not respond within business hours today, so I thought I would ask on here.

Then I bought another "cheap" $400 printer and although it was fast (70 pages per minute), the envelope feeder only held 8 envelopes at a time.  

Today's math is 10-15% down, and re-house hack every 3-7 years.In italics, this is a fine goal but be realistic.