Dave welcome to the forum-- you'll have a blast chasing bass with a fly rod. The good news is that you don't need all kinds of fancy equipment-- you have lots of options for decent inexpensive fly reels that will work great for largemouth-- just look for one that will hold your fly line plus some backing-- (you probably won't se your backing much with largemouth as you might with fish like bonefish or steelhead but it'll take up room on the reel so your fly line isn't too tightly coiled.
Add a stiff "knotless" tapered monofilament leader about 7 1/2' long tapered to "0X" or "1X" (about 10lb test) and a couple of flies (some bass poppers for the surface and something for sub surface like a size 6 woolly bugger or marabou muddler streamer) and you should be good to go.
And the same outfit should be fine for panfish too with some smaller size 10 or 12 poppers or foam spiders.
Feel free to ask questions as they come up and browse around the forum-- especially the FAQ sections and the warmwater forum there's a ton of info and a lot of guys and gals on the forum fish for bass and panfish.