Since this is a 4-plex I am saving that percentage per unit, so 5% for $2400 rent is $120/mo, or $360/mo for the 15% total. 

Do you think its more beneficial to fully own and control a smaller deal or put your money into a larger deal with a smaller ownership percentage?  

The lower the percentage you can rent as a proportion of the home's actual value the less you'll be able to pull out and still have a cash-flowing property.

Also is there a percentage I pay them from the deal regardless if it's a buy and hold or fix and flip?

Hi James, thank you for the reply. two triplex about a mile from each otherthese are not inherited tenants - these are tenants that the property manager rented to upon my approvalmanagement company income criteria is 3x the total rent and their other expense cant exceed a certain percentage (cant remember right now)All tenants met the management company and I approved them based on the information they presented to me. 

Also, commissions are not always percentage based. 

If we took the family members money, it would make things easier but how would we split percentages?

How it usually works is the PM takes a percentage of whatever the GROSS RENT is.

The percentage rate varies a little on the homes price. 

My third question, How much does the price point of the Mobile home you buy dictate the potential "percentage" returns of your investment?