I wouldn’t imagine that percentage would exceed 10% but I suppose it could if there were a compelling reason.My guess is that lesser established groups would give you a better arrangement than an established group.

This is what we have--one "holding company" or master LLC and then a series for each property or group of properties.

Never pay for a mentor.....Go to your local real estate groups.

He also does a monthly investment group meeting.

Bigger Pockets author Chad Carson will be the speaker at the Sept 20th meeting Contact me if you need info on this or other groups in town. 

Yesterday while at a local REI group meet up, one of the guys was talking about finding The Syracuse Landlord Property Improvement Loan Program.

I have a group in Northern NJ.

There is also a Kenosha REIA out there and some other networking groups in Racine.

There are a few meetup groups on Meetup.com that are worth visiting also.

I've had great experiences with him and his group.