congratulations! Great tractor and some fabulous kit to go along with it.
Read your manual, then read it again. Take it slow and easy, there's a lot of controls and stuff to learn, and it's a big powerful machine that can hurt you if you're not careful.
WEAR YOUR SEATBELT! Tractor rollovers are a real killer, and it happens way too often. That's what the ROPS are for, but they don't work if you don't wear your seatbelt.
Watch out for hills--go down forwards, go up backwards, don't go across them. Watch out for picking up heavy loads with the bucket or grapple, keep the weight low, have ballast (like your BB) on the back, and go slow.
You'll love it and you'll find a zillion uses for it once you have it. Have fun!