The pan is pretty light. You'll definately be able to handle it with one hand. Trust me, I weigh 135lbs.
It's my race weight.
I'm pretty sure there's 14 bolts. I didn't count mine last time I did it but I remember there was quite a few. Some of them are a little hard to get to from underneath the car.
There should be three little magnets in the bottom of your tranny pan. These will undoubtedly have some metal shavings on them, so don't be concerned about them. Wipe the entire pan down (magnets and all) untill it's nice and squeaky clean.
The tranny filter on mine was an aluminum color, but I don't think that matters.
A new filter is the entire aluminum housing you see in the picture. It's filled with a cloth-type filter and should have a gasket on the top of it. NAPA carried mine and had it in stock. Most places should carry them and at least be able to get you one within the week.
Don't drop the valve body. That's just making things harder on yourself.
Replace the filter. Replace the gasket, wire brush the old one off if necessary. Re-bolt the pan on.
I filled mine up with Castrol ATF+3, available at most auto parts stores. I picked mine up at Autozone. In most Chrysler transmissions ATF+4 has superceeded ATF+3 because it is a higher quality fluid. My tranny doesn't seem to mind the ATF+3 though.