Congrats Pit Man, It looks sweeeet (but then...I am kind of partial to good looking 2520's). I am also envious of your finish mower. Is that a 72"?
In addition to the previous comments, I would also suggest a ballast box or some type of additional weight in the rear especially if you are doing any work with the FEL. Also in looking at your pics, it may appear the dealer forgot a linchpin when attaching the mower. Maybe it is just an illusion in the picture, but I would hate to see the pin come out for you.
And as v8 said...have fun!
Doug