For your investment property loans, if they are done in an LLC, most of them don't report to your personal FICO Score, however you can ask the lender before you get a loan to verify. 

I always say this: Your personal brand is important because people believe you, trust you, and give you money

As that will at least help folks that you reach out to know that you are a real person, with a picture and professional bio.

Personally - we have found a lot of success scaling from single family to multi by a combination of all the above.

Open a personal account, use their banking services & if you can demonstrate a track record of executing on the real estate loans they fund for you, these relationships can really accelerate your growth.

Nothing was done because she’s a horrible tenant, it’s just a personal issue that requires me possessing the property.  

@John N CookI don't have much experience with ROBS... but the C-Corp requirement will mean that your C Corp has to file and pay its own taxes - unlike a Single Owner LLC, which can file within your personal tax return.  

Ultimately, if you find the right land and feel confident in the building process, it could be a great way to create a space that meets your needs.

@Carl RowlesI would keep the property's finances separate from your personal finances, as you have suggested.

I finally found one at 20% higher than I was paying, but with a higher deductible and greatly reduced coverages (loss of rent from one year to 3 months, liability from $500K to $300K, everything else cut or excluded).Personal opinion (I work in insurance) and those of pretty much everyone I've spoken to in the industry feel we are at least a few years away from anything softening.