They taught me how to professionally engage the brokers and sellers and submit all-cash offers using THEIR cash. 

There, a contractor would submit a schedule of value to the owner (or subcontractor to the GC).

Having proper software and systems3.

My property manager already submitted a 60 days eviction notice at the start of August, hoping to kick out the tenant in October, but I'm not sure how that's going to hold up.

If you inherit a tenant and they have been a good tenant, I see no reason to suddenly ask them to submit an application for a potential lease renewal. 

You must use a PMS and for the software to work you'll need to own the listings, which means you'll need to also collect all the funds, so owners' rents don't get deposited in the wrong account (Yes, Airbnb makes that mistake all the time!!).

However, going to the unit, seeing what needs to be taken care of, writing it up, submitting to a manager, going to Home Depot and then doing said work takes time. 

I submitted a feedback with Awesome REI and they told me that with the $97.00 was enough to do the business and that I will have their support if I needed help.

Also can you share me the best software to manage pricing?

One of the big ones is that accounting software can keep track of partners' contributions and partner equity.