With me working for corporate America 60 hours a week, finding time to grow my real estate business is tough but something I am passionate about and hope to one day be able to do full time.

Depending on your self wealthiness, you might ought to form some type of corporation or a LLC.You might ought to get some advice from an attorney and/or a CPA (or a tax accountant) on this matter.  

If there is anything in there that names a specific purpose of your corp and this loan would be a violation of that purpose, you'll need to amend your corporate guidelines with a full vote of the shareholders and officers.

Or is there something special about their corporate entity?

He retired from corporate America earlier this year.

I am looking to move out of Florida however so, this isn't to big of an issue for me.I have looked into companies that create corporations to use retirement funds as capital in a business (avoids the taxes and penalty) but not sure how this would work with real estate investing.Does anybody have any experience with this sort of thing?

I just started working full time in a corporate role and am brand new in the world of real estate. 

Don't worry about setting up your LLC as a C-corp or S-corp until you are really making money.

Corporate background and trained in accounting  

I am new to BP and am starting my own real estate development business while I continue my full time architecture job (corporate, mostly retail; not residential).