This all sounds way more complicated then setting up a large fresh water tank. I might just do another fresh water instead, for money reasons. Thank you all for your input.
I raised Catsharks, had Seahorses which spawned for me, and I didn't have the resources like the internet. So if I could do it I have no doubt you can. I totally agree with everyone 's post as far as research and sumps can be purchased, and they may include the protein skimmer. If you start off with fish only you should be fine, leave the reef inhabitants a lone such as Corals until one day you feel the challenge. My suggestion is if you decide to do Saltwater start off with the hardy species that would fit your aquarium size.