In my area i would write up the covenants and restrictions regarding what is built, then offer the lots to anyone. 

If the building was built after 1945 but before 1965 it probably has lead on the outside and not the inside so it's worth going for the limited lead cert.2.

If that's place was built in 1940 and hasn't had significant updates, perhaps 7% or 8% is better.3.

Can anyone recommend a broker and/or real estate lawyer who could help set up a seller financing agreement for a single family home in Rapid City?

They are built In the 1930s and will need a full gut remodel, which seems extreme for me as a new investor but someone gave me the idea of wholesale, how do I begin to find buyers if I chose to pursue this?

Unfortunately not all Turn Key providers are built the same so find what matters to you and figure out which provider satisfices majority of your wants/needs.

Lo, and behold, my clients at the time had lots of children that were exactly 2 and 5 years old, I had lots of clients with 16 years of education, lots of houses built in 1965 exactly (not a year older, not a year younger), and yup lots of whimsical imaginary numbers for the values of other real estate they owned. 

My last design for multi-plex was about 240 hrs from template through too complete final rendition checked off by all, that started from a template I had handy AND was in a style I have built for over 20yrs, I could draw it out with my eyes closed.

The house is in a great location and will not have major expense (house was built in 2000, have new laminate floor, AC, and interior and exterior paint in 2015).

With a cash out refinance, the extra equity built up in a property either through renovation or through rise of prices in the property market, is taken out by obtaining a new larger mortgage.