I am wondering what the best software systems that are available to list my property on to get tenants, screen, application... etc. 

Loved* That Respose     What is another Software you recommend, free/paid?

The more you customize the software, the harder it is to maintain and you end up with vendor lock which in simple terms you are at the mercy of your developer(s) as they are creating custom code that is difficult to maintain without them. 

FULL-SERVICE OPTIONA servicer offering their full services usually charges from $75 - $150 per loan per month (pricing is usually different for non-performing and performing loans) and performs the following tasks:Boarding of your loans – The servicer will enter all the necessary information about your loan into their loan management software.

If you're using RentRedi as a managing software you can add Latchel as a maintenance service.

Anyone have tips on the best all in one self management software?

these Guru get rich because most of us want to get rich the easy way and they sell us the solution. so don't feel bad about it, he supplied you with the software brother find your own deals...and Good luck brother. 

@Robert Barbee, I'm came across this post because I am researching new software myself.

We use baselane, so is there a simple process with accounting software that would make this easy?

The property management software makes it extremely easy and efficient.