A couple of the big cost items are insurance, computers & software (one software seat can be $5k+/yr or more), employee pay and benefits, mortgage for office building, license fees etc.Some items that people don't realize is included in our fees (most of the time) is our consultants such as structural engineer, MEP engineers, civil, landscape architect, etc.

Do you all have any recommendations for the best program/software to market my property for rent.

I would say the software is fine when paired with Vortex.

Where are you strong that you won't buy a software and where are you not so great?

Do you use any specific software or sites to filter for sellers open to SF?

If you know that information, you could get an agent or use various software programs to try and guess if there are any mortgages on the property and what the balance may be.Depending on how the conversation goes, you could offer to help find him a buyer for an agreed fee.

There are some great replies in here already but I would also want to suggest the use of virtual management software as a supplement to traditional management as well.There are some powerful software tools out there that essential manage all of those units from your computer screen (collect rent, process maintenance tickets).Hire a local handyman and they can act as your boots on the ground in case of notices or emergencies.This may help you save a couple hundred bucks down the road from the rising prices that management companies are charging now. 

Example would be emails (not using a personal email) bank accounts, LLC's, accounting software etc..Do you lump everything into one account, one email and one accounting system under one LLC or do you break up each into their own individual business? 

I was wondering if there was any software that provides a solution to this?

Yes I am using a screen reading software that allows me to use a computer.