Seems like you have everything but I wouldn't get the seaclone there not very good and instead of the hydrometer you should get a refractormeter for like $25-$30 more and you also forgot a RO/DI unit
If it really is ich then any reef safe treatment is most likely not going to work. I only know of two true ways to cure ich in saltwater and that's hyposalinity or copper and neither are reef safe
From what I've read it's like a bee sting. I'm kinda on the fence about getting one now I've been reading post after post of people adding a foxface and then one of there fish ends up dead the next day