Dennis,
West Systems epoxy works very well, there are a lot of filler selections to go with the epoxy, and for many, you can buy it locally at a boat supply store. They also have the pumps that take the mystery out of measuring resin and hardener. I've called the Gougeon Bros (WS) with questions about their products, and they were very helpful.
For cloth, I've used Thayercraft in NC and they have a great selection of all kinds of cloth at a good price. They are also a good source of info on what you may need. I wouldn't buy the cloth from the boat store based on my experience. You should always have some bi-directional cloth to handle the compound curves you'll experience with intersection fairings. I used 9 oz. cloth and it worked well - 2-4 layers, depending on needs. If it's too thick, or not satisfactory (bubbles) you can easily sand it down with good quality sandpaper. I get my sand paper at an automotive paint store here in Cincinnati. It's more expensive than Home Depot, but turns an hour of sanding into 20 minutes.
Good luck. There's no experience required with the kind of fiberglass work we do on RVs - non structural. If you don't like the results, just grind away what you don't like for a few minutes and do another layup. Your imagination on how to do this is your only limitation (or gift!).