What other options do I have to sell it separately?  

There are auction sites like trionx.com that sell HOA properties.

My most recent purchase was a duplex in Carlsbad which I 1031 exchanged into by selling one of my single family homes in East County San Diego. 

For example, there are plenty of people, including accountants, trying to sell their services on BP (granted with various competencies...).Even if you did a "sales" job, there is still paperwork and analysis to be done.  

After 1 months for searching another tenant this month ,  he found a tenant who was divorced and forced to sell his property, as he said to my property management company .

A friend of mine trying to leave the area and sell a commercial property that he owns.

Ask if the investor has anything they want to sell at first contact.If you want to separate yourself and get a better response from investors, take time to understand the investors purchasing parameters and send them targeted opportunities that fit within the desired parameters.

I believe they sell courses if you like their stuff.

So for now you have a few choices sell and get what you can.

If you take cash or purchase less than you sell you pay tax on that as "boot".