short sale or cram down on rentals

I have 2 properties in florida that I purchased in 2004,2005. Not a good time to buy.I still owe 135k on a house (that I bought to retire in) that is worth about 80k. I also have a Condohotel in Daytona that I paid 90k for, that are now selling in the 40k range. I still owe 60k on it. Both are rented, but I still pay $800/month out of pocket to cover the mortgage. In the past, I have had the money to do it, since I worked a lot of overtime on my job. Now, due to health reasons, I can't work overtime and do not make the money I once did. I have depleted most of my savings and won't be able to do this much longer.I am 55 and will probably be forced to retire or go on ss disability next year,So it's not like I will ever make $100k/year again
I have about 75k in equity in my residence in Ohio. I have 3 rentals in Ohio with between 5k and 15k each in equity.
What are my options? Chapetr 13. I am told that I can't have over $30k in equity in my house,which I'm sure I do.
How do I get a short sale? Do I just throw in the towel.
I have worked my whole life. To get to this point and be broke just isn't fair.