These have been large scale renovations with layout modifications, new electrical, mostly new plumbing, etc as well as a mid higher end finish (quartz counters, marble tile, etc).I'm looking for a benchmark, particularly on timeline.

So incorporating, Fed EIN#, business plan even business bank acct are a few of the first business steps that help you present yourself to private money lenders on a different scale.  

Regarding the closing, it's a much simpler process than single-family homes especially if you're purchasing with all cash on personal property transactions for manufactured homes. 

Hi Everyone, I run an investment brokerage and development firm in Los Angeles and have lately been focusing on a few projects I have in LA county that would target entrepreneurial start ups in various commercial manufacturing sectors.  

Large numbers are in the realm of apartment investors where it all comes down to scale of economy. 100 tenants one roof, not 100 tenants 100 roofs.

I am looking at a few manufactured homes in good neighborhoods around Volusia County, Florida for under 70k.

Would we be spreading ourselves too thin by trying to scale quickly?

I will acknowledge that Los Angeles will not see significant manufacturing gains, but remember the US is a big country.

Scale back, stay within your means and you will be fine.Personally I would sell the New Hampshire property in a heart beat since the rent on it is only half what a home of that value should be to insure positive cash flow.

My Two-Cents is that you don't need an MBA to succeed at small-scale real estate investing.