I don't think you would need a kalk stirrer and a calcium reactor. I have not used either of those but wouldn't that raise your alk and calcium too much using both?
That tank also has a chamber for a refugium so if you wanted to save money you could skip the algae reactor.
The only other thing I could suggest would be a reactor for carbon. Not necessary but I figure you are going all out on this so might as well. Same goes for UV sterilizer, filter sock rollers, and other similar but unnecessary items.
