Not sure how it works but if you can also get health benefits for your retirement then that will be even better as that is also something you will not get as an agent. 

But if you really wanted to, you could substantially overfund your collateral in case of a quick drop in price or wait until you're sure we've hit bottom. 

I’m sure more questions need to be answered but thought I’d start here first.

Quote from @Sherry McQuage: Make sure to check the zoning to make sure mobile homes are permitted there; check for any hazardous waste designation for the area; will you need to have the parcels surveyed out in order to sell the size you intend? 

I am not sure what companies are quoting you, but you should shop more.Make sure to have the location of where is showing the cracks so you can get a more accurate repair estimation.I have some contractors that I can recommend.

I'm analyzing properties in my expensive market which has a dire need for affordable housing.

Focus on neighborhoods near employers or schools, and explore slightly outside Austin for more affordable options. 

We have no control of the condition of your property, if the value will appraise at where you feel it will appraise at, selecting specific appraisers, making sure the title to your property is free of any liens/judgements, what the title company will charge you, how much the AMC will charge you for an appraisal, what your property taxes will be, how much your insurance will cost you, and the list goes on.. 

One year from time of payback or time of loan start date I’m not sure of. 

Sure thing!