I think it is a good read, but very high-level information.

Unfortunately cold calling offices for something fairly specific might confuse the lower level employees that are often answering the phone.

The wholesale buyers push the mfrs to build on the cheap because they lack the marketing and sales skills to sell much beyond cheaper price.If you don't think that is true, look at all the very used homes being sold in communities because the community owners don't believe they can sell a new home.

Sometimes I rehab flips, but the level of rehab and the materials used are different from the rehabs for rentals.

This would imply possibly substantial cutting and filling to achieve level building pads.

A pretty sorry education system, until you get to the various certification levels.

Even if I had construction skills/experience, I personally believe that being involved in the construction side of things is a waste of my time and money.The best and highest use of my time as a business owner is to grow, scale and make my business more efficient.

Action is what will get you to the next level.

It's going to cost you a least $4k just to tear down, transport, setup, and level and doublewide.

I'd get a quote from a house-leveling company and get an opinion from a structural engineer or a house framer (cheaper).