Interesting Thanks for the info, I think I will give it a try. I think it may end up after I buy everything saving me some money, My water bill is like 150 mto 175 a month unles I do not do water changes then its 55 lolI can answer this until tim chimes in.
Are you using dry rock or live rock? This would matter as dry rock can potentially leach things until it's cured. If that's the case I'd do a test after the tank is cycled. if you used cured live rock and the tank is cycled, you could do a test now.
No matter what salt you use you'll find things need to be adjusted. If you have things living in the tank you'd use the recommended guidelines for dosing each element. If not you could manipulate a little faster, but really that's not a big deal if you started with a good salt. Most of my dosings were originally done over 2-3 days with fish and coral.
The reason the fuge is the first chamber - the design of the full method is no filter socks. That allows the stuff to go in the first chamber for the macro to use up. I moved my fuge chamber from the second chamber to the first (where the skimmer was), as that was my biggest chamber anyway. If I wasn't using the full method I wouldn't change it back, as it really wouldn't matter to me anyway.
And with starting the tank use the non method core. You can convert over after the system (fuge) is mature. This would help with unwanted algae in the display.
Hope that helps until tim has a chance to chime in.