That last link has a good cheap bench in it.. just install the bottom boards inside the legs to give your feel and ankles more room.. also makes it eisier to install the bottom shelve.
if you have 9 foot ceilings you should be using 54 inch drywall for the walls just lay them length ways when doing the walls. this way you have a seam around the center of the room instead of doing vertical seams. I just finished my house and garage and i have 9 foot walls in my house and it...