2) How should we incorporate?

Also, would it behoove me to keep my job for the time being to be able to claim the income.A combination of #1, #2 and #3, (spitballing here) incorporate as a RE investment business where I flip 2 houses, use that income to purchase a BRRR , repeat a few times, then proceed to #3 where I can now claim the flipping proceeds as income when qualifying for a commercial loan.

Take something you are familiar with, incorporate the essentials and safeguards necessary to protect yourself and always have a rider to provide for issues that arise.  

@Rainiel De La Nuez I have experience doing JV's and using SPV's in corporate asset transactions and contracts.

If two investors (debt and/or equity) come together and form an LLC which is used to purchase mortgages, that join will be governed by the Articles of Incorporation and Operating Agreement of the entity.

I don't know how much it costs to incorporate in NC, but it only costs $70 to file in CA (though there is a minimum tax of $800/year). 

Why not buying a 3-4 unit property In LA incorporating FHA loan with 3.5% down?

Just to be clear, this question is not because I'm trying to save money or cut corners; instead, I'm trying to build a successful flipping business and incorporate the best practices early on.Another thing I don't understand is what additional value an inspector adds if your general contractor, who also looks at the property, is very experienced?

We also have a good friend who owns a concrete company that we could incorporate into our business if need be. 

I do have a cousin that I could incorporate to facilitate communication to me (possible property management role) and liaison for the contractor on the updates.