When I apply for the business bank accounts, I give them my LLC's EIN and also my own SSN as the owner and their form asked me if this LLC will be taxed as sole prop or corporation and I selected sole prop.

Here are a few points to consider:Piercing the Corporate Veil: If you don't maintain clear separations between LLCs, there's a risk of "piercing the corporate veil," where courts may hold the holding company (and potentially you personally) liable for an LLC's debts or legal issues.

Hello all,I was hoping to get some feedback / reviews on Prime Corporate Services.

Are you going to hire someone to make sure the corporate formalities are upheld?  

Maybe corporate flippers, or some that have dozens (at least) of flips under their belts.Why would material suppliers give a discount to a first time flipper?

your corporation then becomes the plan sponsor and chooses to fund from your retirement money.

. :)You seem to be missing the applicability and similarities in BP and the corporate landlord. 

This means that you will probably need to pay registration and filing fees in at least 2 states if you don’t buy CA property as a CA resident.Any lawsuits should be limited to the assets of the LLC and not your personal assets (assuming you run the LLC appropriately and the corporate veil is not pierced, some debate as to SMLLC).

In my layman's point of view, this is co-mingling and alter-ego violations to piercing the corporate veil. 

You will have to refinance into an LLC/Corporation/Trust that your wife owns and she will be the guarantor.