My only concern is the foundation.  

Wholesalers can be found at every meeting. 

Great first step to learning and investing.I highly recommend BP's Ultimate Beginner's Guide, it helps to form a general foundation in the industry.

Ultimate goal is to invest in property however, while in the foundation stage of credit building among other things I am interested in learing how to wholesale.

Checking with the departments one by one for each land listing that looks promising seems very inefficient.Regarding costs, i hear build costs of containers vs stick built being similar, but I had wondered if that is taking all aspects into consideration like build time, foundation and site prep requirements, etc. yes, steel cutters and welders are a special trade but the structure can arrive pre-built and potentially just sit on concrete pier foundations if the soil and zoning allows.

Plan to rent the house for between $1200-$1300/month.Rehab Needed: The house is in fairly good condition overall (solid foundation; new high efficiency furnace; newer water heater; updated electric), but we are estimating $25k in repairs.

I had a question about manufactured home parks, that are on foundations.

It is on a FHA approved foundation, however the lot is small and in a crappy neighborhoodIt would bring a much higher price if it was on 2-5 acres in the country. 

once we have gained knowledge and built a solid foundation,with BiggerPockets then we look forward in keeping in contact with you. thanks again.

If all works out, I should be able to reach my goal of mirroring my retirement income coupled with providing a great foundation for my 2 boys to learn about real estate.