Im going strictly on what I see in your last pic, so if this has been addressed already I apologize. It looks like you may have a dead spot where what appears to be waste collecting. If you can find a way to get some flow back there it will help your (soon to be added) skimmer work a little better. As far as cloudy/discolored water, have you tried running carbon ? Carbon is cheap and will do wonders for water clarity. Just a few thoughts that may help you out.
Good Luck