I have too many questions for one post, so keeping this post broad and will ask more specific questions in the coming weeks/months.I have a good 6-figure job and some limited real estate investing experience (own one short term rental in the Denver area and recently Airbnb'ed a second property under the rental arbitrage model). 

@Charlice ArnoldThis is a tough question because it's so broad; debt is dealt with on a deal-by-deal and location-by-location basis.

Section 61-2c-102 broadly defines "Business of residential mortgage loans" as follows:(g) (i) "Business of residential mortgage loans" means for compensation or in the expectation of compensation to: (A) engage in an act that makes an individual a mortgage loan originator; (B) make or originate a residential mortgage loan; (C) directly or indirectly solicit a residential mortgage loan for another; (D) unless excluded under Subsection (1)(g)(ii), render services related to the origination of a residential mortgage loan including: (I) preparing a loan package; (II) communicating with the borrower or lender; or (III) advising on a loan term; or (E) engage in loan modification assistance.

Consumers are always looking across an array of platforms you wouldn't expect. 

This is a very broad question, but you say that seasoned investors don't care about interest rates, only profit.

This could also help the investor see if those items will need replacing at a narrow or broad timeframe, thus affecting the purchase offer price.

I wouldn't do a general business tract as it's too broad, too theoretical to be helpful in the long run.  

Finally- speaking broadly, condos don't usually make great investments.

I've read (all my knowledge is theoretical) that tenants on government assistance can be really rough on properties (I also see that as painting with a broad brush) but the government assistance side of that is pretty stable income, and it doesn't seem terribly difficult to raise rent either, just requires 60-days notice instead of 30. 

Your post is so broad that almost any answer will address it.