In hindsight, you can now pick up a single panel of similar or greater wattage as the 3 or 4 combined for about the same price.
Roy's right about panel pricing. These days you can get a very good quality solar panel
that'll cost less than the 3-panel "amorphous" silicon panels (like those in the $250-$300 kits), will take up half as much space, and last longer, too. I can get a really nice 60-watt panel for about $200 these days; that's about 15 more watts for the same money after you add in a $60 controller.
Another good FG denizen to look for solar advice from is GinaD. She's a boondocker extraordinare and solar living sage. I avoided many early mis-steps by reading her posts on the subject.
Last of all, as someone who has some experience with both brain surgery (on mice) and rocket science (as a high-power rocketry hobbyist), setting up a solar panel
is not brian surgery or rocket science. If you can wire up a light
socket, you can do this. Do a little reading, ask a few questions, and you're probably good to go.