That is some list!! I am not nearly that organized, so I may just print it out for my son's reference.

When my oldest went to college, we bought so much stuff down when he moved in. I bought plenty of towels, as they get used a lot and washed less than I would like. I did (and do) give him our old towels so I won't get upset if they are used for unorthodox purposes. : ) I will tell you we bought a lot of kitchen stuff since he had a roommate, but they were also within a 3 bedroom suite with a small kitchen. It was such a waste of money. The boys didn't kntow each other, so didn't communicate beforehand, and moved in at varying times. They ended up with FIVE microwaves!!
It is so easy to move in with the basics, then take a trip to a local store if anything really important pops up. The other thing I have found over the past four years is that if I send an occasional note asking what he needs, he is happy to get a care package. I will send sheets once in awhile, some new cups and plates for the kitchen, towels, whatever. (He is in an apartment.) Since we all like to shop online, and know how to find deals & free shipping, it's an easy way to let them know you're thinking of them without breathing down their necks.
My second d/s is off next month, and I have given it very little thought. We'll go through what we have here, then get some bedding, pillows, cleaning supplies (paper towels and trash bags can never be too plentiful!) and see how it goes.
FWIW, I buy the extra-long twin sheets all year without any problem. They go on clearance shortly after school starts in Target, Bed Bath & Beyond, Sears, and I grab them!
Good luck on your new adventure! If you find yourself anxious because he's clearly not getting his act together and moving date is coming, etc., remind yourself that you should not have to work so hard to convince anyone to LET you help them. It's really not such a great privilege. He'll be fine, and if you are worried you've done too much for him (as have I for mine), I can assure you this will be the time he learns to man up!