55 gal. Mixed reef build

did I get good deals?

 

While I wait to get a job, I’ve been putting together a equipment list. I’ve been looking for a good skimmer to put in my sump/fuge, I found this one, Reef Aquarium Filtration & Protein Skimmers: Eshopps Hang-On Protein Skimmers
does anybody have one? is it a good skimmer?

 

This one might work better. Would this fit in the sump, the sump is a 20 high.
Reef Aquarium Filtration & Protein Skimmers: Eshopps In-Sump Protein Skimmers the PSK-75 skimmer

 

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anybody know about the skimmer?