Sounds like you thought something was too good to be true, and then found out that it was too good to be true. And then you doubled-down, and now have a bunch of illiquid assets.
Did you buy the warehouse sight unseen? Did you do any research on the local community and crime rates?
Cheap land is cheap for a reason. It sounds like you found out the reason that land was so cheap.
After searching for, and looking at many of these types of properties in the last few years this is the conclusion I've come to. There is no free lunch.
