welcome to the world of taping, with never ending questions!
i would agree with the impact stand stand, they make good stuff, i use a creative light stand and love it. and windtech or on stage makes great clamps to mount stuff.
for windows i would recommend wavlab or for free wavepad by nch is great! i use it.
for rain protection i use an umbrella made by ted gakidis, who is a cable maker and everything taper maker. if you need to get in touch with him i can give you his email.
and id also second the idea of external mics, check out church audio for a great microphone setup for a great price, like $300.
always feel free to ask any question, we are hear to help