I don't hold myself out there as the actual funding source, but rather a conduit to finding financing.  

However, they had issues with our source of money for our down payment.

It is more critical to you when you are buying rentals because you already have a long term hold strategy so you want to refinance as soon as possible to make funds available for another house (flip or rental). 

Also, is the travis county foreclosure notice website a good source?  

This really depends on your market and source of properties you buy.I have a few REOs that I bought and rehabbed in the Philly suburbs which get somewhere between 1.5 and 1.9%I would get too hung up on this general rule of thumb.

I will check all of this sources now

If so, what are good sources to get that HELOC? 

Find them through Google and meetup.com Find your money sources hereDownload BP’s newest book here some good due diligence in Chapter 10.

Loan generally has to be 2 million or higher with some lenders requiring 5 million loan or higher.Lenders typically do not want to lend to foreigners with no tax returns or a way to source and verify their money to make sure it is not money laundering or tied to terrorist activities etc. 

Also, this is something that I am looking to make my primary source of income, so although buy and hold options are definitely in my future, that's not for me at the moment.Thanks,David