I setup one QBO (Quickbooks Online) account to handle multiple LLCs. 

Becca,   glad to help.How did this guy find you in the first place or was there something on line that you saw and responded to..

Theres a lot of place online to list like apartments.com, facebook marketplace, realtor.com, trulia, rent.com.

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

We currently have 105 units and are using a variety of excel, google docs/sheets/calendars, apartments.com (ads and rent collection), docusign and QuickBooks online (which we would like to keep). 

Sadly, it’s sat on the market too long and I’m looking to get creative with bringing the attention of many buyers looking for a good deal on a property (online auction or something else with tons of attention??)

Check out other online guides available here: https://www.biggerpockets.com/guides3.

Unfortunately, ESA (Emotional Support Animal) letters are tricky, especially with how easy they are to get online.

I would recommend first, finding and joining at least one if not more local real estate investor (REIA) meetup groups (look on Facebook or Meetup or just search online) and try to attend as many as you can to network with local folks doing all different avenues of investing.

Is it customary that they have their process displayed online or in a pricing guide so I can shop around?