The timothy pellets are good for adults. I forget how old Alfred is, but he probably still needs alfalfa pellets. BTW, I don't really like any of Kaytee's alfalfa pellets, you're better off going to a feed store and getting a 16% protein pellet made for breeding rabbits. If you can't use up the big bags, just take what you need and donate the rest to a shelter. You'll still save money!
Their timothy hay is ok, but I find most packaged hay to be really dusty from all the packaging and shipping. I mainly buy bales from local farmers. $5 for 40 lbs, woo hoo! I used to order 20 and 50 lb boxes of hay from Oxbow, which is cheaper than buying little bags of Oxbow or Kaytee in stores and also was usually less dusty. If you want to buy online, there are a bunch of different good vendors to try.