I figure what I'm going to do for the Dip/chin station is basically replicate a power station like in the pic only using wood. I figure 4 4x4s spaced appropriately apart with holes drilled for thick dowels or pipe to be used as handles. If I can design it well It should be a standalone unit that is easily assembled/disassembled and adjustable. Going to scope out the Home Depot tomorrow and start planning.