Unless its new & unused ditch the fermenter.
If you decide to use plastic fermenters & bottles don't use anything that will scratch them when you clean them. 30lt is a good size fermenter for your needs.
If you only buy one book to learn everything from basic to advanced brewing make it this...
I was building a rims and decided the camlocks were the neatest way forward to fit the various male/female connections my system had. Doing it with the brass connectors meant using a variety of extra adapters to get the hose connectors to fit. I think I also wanted full flow barbs to recirculate...
+1
I went down the brass connector road for about a month and then quickly switched over to camlocks. As mentioned the brass ones weren't cheap either.