Hey,
I don't think there are tripods for different situations (at least not for consumers, correct me if I'm wrong), so I would buy a lightweight (more easy to carry). But I would make sure the legs are strong enough (I spotted some cheap tripods, but when I saw the show models, the legs were already bending under it's own weight), so try one out, see whether it's strong and durable enough to sustain for a while. Ofcourse try whether you like the system, like how it slides out, I don't think it will be a problem, but who knows.
What could be very handy is a tripod with that thing (can't get the word cause I'm a foreigner) with water and a bubble in it so you can see whether your tripod head is level. (so your shots are level, my tripod doesn't have one, it's driving me crazy).
Then, if you want to make a "pan" (so turning your camera horizontal, for example a panorama, or following someone) it could be handy to buy a tripod with, or an external fluid tripod head . This will make your "pans" more smooth. I believe they cost more, but that I don't know, and you'll have to find that out yourself.
And last, a tripod with "quick release" is usefull, as you don't have to constantly screw your camera on. Just watch the link I'll give you.
Conclusion: You can have about any tripod you want, just make sure it's sturdy, and if you like, with a "leveler". But it's all up to you.
Here's a link to see that most are the same, and price is one of the biggest difference:
http://www0.epinions.com/Tripods--fluid_head
There are some more expensive ones, but they can carry much more weight.
Ok, a lot of talking but now the mic. To be honest I don't know much about microphones. But I would suggest (as other more professionals adviced me) to just buy a rode microphone. Check youtube for "rode video mic" to hear the difference. They are around $150. They are a well known company (so no unknown cheap asian brand) that build microphones for a lower price. And this one is very good and "cheap". Check other websites for a proper mic. When you look for a mic yourself, make sure it uses a mini jack for output.
cause that's what your camera input is (I believe).
Good luck.