I used Gasoila Soft-Set thread sealer to put my fittings together.
That pump comes with a three piece plastic pickup. I changed it to a one piece metal pickup because it seemed a bit flimsy, but it's probably not critical you do this. I just got some black metal pipe at the hardware store.
I also changed the nozzle to one that shuts off automatically. I used to stock nozzel at first but I like to auto shut off better. You can get a farm model for about $35 bucks. A "leaded" spout will give you a bit more flow. (A leaded spout refers to the size of the filler spout after the handle. This spout size will also not fit into a standard gas filler neck on a car, which helps prevent a stupid mistake).
I installed a Petro Clear filter after the pump. I think this is an important thing to add on.
The most common practice is to put the pickup a few inches off the bottom of the tank to avoid picking up water and junk that builds up down there. Then periodically drain the water and junk out via the bottom plug. (Maybe once every 6 months to a year?) Some people here think I'm nuts (and I'm okay with that!) /forums/images/graemlins/grin.gif but I put the pickup maybe 1/4" from the bottom so I pump out any crud and water before a lot builds up in there. This helps make sure the tank doesn't rust out from the inside (just like draining the tank from the bottom). My storage tank filter takes care of any water or crud that comes out. The filters on my equipment are always clean and never have water in them, which is more than I can say for the diesel I used to buy at gas stations.