Hey Brian - nice purchase, congratulations.
Does your 075 have the rectangular pellet hopper or the older round one? If it is round, then it won't need the drip bucket. Also, be careful if you buy the lower shelf and the folding front shelf because they won't fit. The problem is that the legs on the older units (round hopper) are on the outer corners of the unit and the legs on the new units are set inside about an inch on either end. I was able to get an old-style wire fixed front shelf for mine and then I modified the lower shelf by adding 1x1x1/8 aluminum angle along the length of the shelf so it could reach the brackets that are attached to the legs. (In fact, the lower shelf does a great job of strengthening the whole unit and preventing the legs from 'corkscrewing' when you are moving it).
I have decided not to buy the Traeger pellets because a) they are expensive and b) I believe the supplier for Traeger adds flavored oil to the pellets and I prefer a natural smoke. But, just don't buy heating pellets - they are not hard enough and the sawdust will eventually clog the auger. No big deal but it's an afternoon and a bottle of wine to dismantle it all and free it up! I know!!
Regardless of all that, I love my Traeger and I know you will also. Check out the cold-smoke attachment once you've mastered some of the other basics. And, the Traeger service guys in Oregon are brilliant. Their website will give you the phone number.
Smoke on, Brian!