I personally would not consider Nicaragua as a bugout location. Usually in any scenario that might cause one to bugout from North America the first mode of transportation to be grounded is air. So you are going to have to plan for ground travel, which would cause several problems with borders that could be closed at any time and fuel for your transportation. Any location that uses more than one tank of fuel requires dealing with strangers in a crisis situation.
Maybe if you have a sailboat and can bypass the problems of land travel and you still want to consider Nicaragua. You will have to consider that during your prolonged absence from the property any buildings will be broken into and things stolen. You may also have to deal with squatters.
(Sailing around Central America, pictured.)