Hello I am just getting started in NNN investment, and mainly looking at national brand tenants in Quick Service Restaurants(QSR). 

Having said that, as an LP myself in 30+ deals, and collaborating with many other LP's the main reason myself and others choose to invest in syndication via LLC is the anonymity that could come along with it from outside litigation. 

The main benefits are doing ceilings and if you needed to paint a bunch of doors.

For those who've made the leap, what has been your biggest hurdle?

If it is not set up with systems and people in place to run it you will be mainly selling your book of business.

Getting less every month is still generally more cost effective than dealing with a tenant that stops paying or causes damages to the property.However, if you do decide to change your selection criteria and you are worried about fair housing, the main thing is documentation.

Is it on a main road or side street?  

Therefore your main competitive advantage is price.

However my main question is what service can I use to report their rent regardless of tenant participating or not.

I might use the HELOC as an emergency fund knowing if I tap into it I now have to aggressively pay it down.Then main thing is you don't want to overleverage any property and if you use a second mortgage to buy a property, you are essentially 100% leveraged on that property.