Is this the stuff I'm looking for?
Looks right to me but see if you can find any feed stores local. They see to be more reliable. But the price and everything seems right so, you have at least found a source!
Those are okay, but you are better off with their Producer's Pride Alfalfa Pellets as they are 100% Alfalfa. Also, it is a 50lb bag. Standlee is 40lbs and also has timothy hay. Nothing wrong with that, but less Alfalfa and protein
I use the Producer's Pride brand on my yard with great results. Plus, in my area, the 50lb bag is cheaper than my local feed store just down the road.