I'd do the exact opposite.
Centre first because they are weak and will shatter if you make any real power.
Front, because stock is open.
And then the rear, since we already have lsd rears. swap the rear to an evo diff or something to make the car swing around corners.
I do agree with the first part of your statement, I was kind of assuming his centre diff was already upgraded to a 4 spider which remains an open diff but is much tougher if he is putting serious power. In the end it all depends on what you do. For a drag car, first would be welded centre diff than 4 bolt LSD rear (viscous) than front and lastly rear clutch type LSD (like Evo 3-8). For a car that sees lapping IMHO I would do a rear 4 bolt with upgraded max lock LSD (Evo 3-8 + upgraded clutch plate) first or centre (4 spider) depending on power goals and lastly the front.
