Reputable events are going to at least try to capture the cost of putting them on or to make some money.The Manufactured Housing Institute (which you can Google) is the national trade association that try to protect everyone in the manufactured housing industry in Washington DC and puts out lots of information on a regular basis to those who have either joined directly or through a membership in a state association.Both of the faculty for this event are private consultants.

There are some townhome communities scattered in New Castle County (for instance New Castle &Bear have some around route 7 & 1).If you have someone that is wanting to sell and save listing and marketing costs, you may be able to get a deal together that way.There are also many areas on the City of Wilmington where homes are listed <$50k  pretty regularly.  

The deals you are looking for are definitely out there regularly, especially SFH.

After the rehab, everything just look like a regular stick-built home.

Your scenario is not that impressive, plus getting an investor to fund you for 1 year would be slightly difficult, getting someone to invest and not collect for 20 years will probably only come from conventional lending, and you will have to make regular payments the whole time

You need to become an expert in the local laws on tax liens and on the real estate values in the area too.I started with less than $5,000 and now invest in tax liens in an i401k that I rolled over and use regular savings.

If you're a regular customer, they will put a priority of doing things for you.

With each lump sum payment that is generated the client is paying more into principal with their regular payment.

You sound motivated, you should do well.Do you have a regular job?

Generally speaking, you should speak with a trained professional who regularly handles Trademark or Copyright litigation prior to taking any course of action.