Materials, labor, etc.?

I have been exploring alternative ways to finance such as piggy back loans or seller financing.

Alternatively you could split the down payment into 4 similar sized properties to stay within your niche at, on average, 216K  with a familiar 43K down payment a pop.This move would help you redistribute your equity to help you maintain a solidly leveraged position while ensuring a positive cash flow.Either way, great pick on the initial property!  

I used to be the featured speaker at a national workshop/school, where we presented PWF's as a great energy efficient alternative to concrete.  

I put that in quotes, because it's really more of an old style correspondence course, with online testing and materials.

It sounds like a legal description issue that probably is not a material issue.

Its a different animal calculating price per sq/ft because of the addition and adapting and reusing material.

Be prepared with that document AND single page supporting material - your resume, your real estate investment experience, the project financials, comps, etc etc etc ... all organized and kept in a folder UNLESS your investor requests that info.  

I am not experienced like many of the members here but just from what I have researched it sounds as if a better option would be to spend your time looking for funding using alternative or non-traditional options.  

I buy most of the material myself and furnish them.