To make it easy, I add additional 1% for PM fees.Long story "long", I use 11% for PM fees :)

My main concern was that with a HELOC I would not want to carry the additional payment for a long time, so maybe investing in a flip or something that would allow me to recoup the cash within a relatively short period of time would be most beneficial? 

Some of the larger expenses-Interior/Exterior Paint, Storm shutters for a few of the front large windows, added additional cabinets to one unit, New refrigerator from Dent/Scratch store after old one died, Laundry units that tenant pays +$50/mo for etc.

I will run through the exercise when I get back to a computer so I can give it ALL of my attention.

I may pick that up next, just wanted to get some additional options.As the title says, post your favorite or most influential Multi-family/commercial investing book here.

@Derek LesterFollowing the fine example of @Joel Florek, let me just say that different things work for different types of investors and in addition every area is different.

Hello BiggerPockets community,I'm a new to real estate and was hoping to get some advice on AirBNBing in Asheville NC.The reason for my inquiry is because I'm hoping to buy a house and use AirBNB to househack it.If any additional info is needed please let me know.Any advice would be greatly appreciated.Thank You,Evan Morales

@Lino B. that is an additional indictment of your managerial skills.Serve them with a notice to cease and quit.

So should each additional LLC have it's own Name?

That would be a very appropriate 1031 exchange scenario.If you go the 1031 route you will pay no tax and that tax will go forward as additional purchasing power for you.