Hard Money VS. Corporate Line of Credit

[Andrew Oliveri]

I recently heard a webinar from Fund and Grow, (a company that makes it's money by helping its clients establish themselves as 'lendable entities' such as an LLC or
S Corp. and then goes out to find their clients money and lines of credit)

They explained several concepts :

1. By establishing your company as a Lendable Entity you are establishing the possibility of banks lending you much more capital than if you did so as a personal line of credit

2. Money borrowed by the LLC or Corp that you set up will not count against your personal credit score.

3. AND POSSIBLY THE MOST POWERFUL IDEA THEY PRESENTED - Once you have established credit as a legal entity and have corporate lines of credit with one or more corporate credit cards, you can then use a service from another company called PLASTIQ which allows you to wire payments (for a fee of 2-3%) with your corporate credit card - (Like a cash advance without the immediate charging of interest)
They went on to explain that you can use your new corporate credit card which will very often include an 'Introductory low or no interest promotion' for 12 months of longer. (The same way you would receive a promotional no-interest personal credit card offer).
PLASTIQ allows for wire transfer payments to vendors (like a cash advance). 
NO INTEREST is charged if you pay it off before your credit card promotional period ends .

So here's my question : "To go LLC or Not?..."

One of the arguments we hear against establishing an LLC in California (I live in LA) is that you pay annually $800 to the State of California.

But maybe it's well worth the annual $800 charged by the state of California if it means I can establish much greater credit with banks with corporate lines of credit and use a 12-18 month interest-free promotional rate credit card offer, INSTEAD of turning to HARD MONEY where I'd be charged points AND a high interest from the moment I borrow the money.

For example, say I needed $500,000 for the purchase and rehab of a property and I was able to access $100,000 or more with a corporate line or credit. This would allow me (using the service of the above mentioned PLASTIQ) to may purchases and pay vendors without paying interest for 12+months, wouldn't this be worth establishing an LLC?

I would be able to carry a portion of the purchase/rehab cost interest-free for the promotional period rather than having to finance solely with hard money or private lenders

The idea of having access to this type of credit that is NOT hard money is very attractive but I'm wondering if maybe there are important details I'm not seeing or understanding. 

Any thoughts on this are greatly appreciated.

Best regards,

Andrew O.