Re: crawlspace excavation
Ramps and wheelbarrows are no fun if it were me I would go to the locale tool rental and rent a conveyor and a dump trailer. Park the trailer out side the window of the room your working on and run the conveyor through the window. That will also cut down on the number of times you have to handle the dirt. You can almost always find someone needing fill so disposal should not be a problem.
Be sure you live your life, because you are a long time dead.-Scottish Proverb