75 gal setup help please!

Here, I am posting your pics for ya!

Just take it one step at a time. Your pump is an external pump and goes on the bulkhead exiting the right side of your sump the gray fitting. The pump will lay on the floor of the stand to the right of the sump. There will be a pipe that will go up from the pump exit back to the aquarium. Are there more pipes that are not shown? Pipes or pipe will go from the overflow back down into the sump. The skimmer can be inside the sump, I thought I caught a glimpse of stubs of pipes inside for that purpose.

Thank you Swanwillow!!
Yup, only stubs of pipes, that is one part of the project I need help with. Also I cannot find the radio that will change my signature from taking up space and boring peeps.