Line/rod weights and types of fish

Howdy,

I am very interested in flyfishing and I want to start purchasing the
equipment to begin in the Spring (I live in SE Michigan, near Ann Arbor, and
it is starting to become crappy outside so I figure I should start preparing
for Spring now - or at least start asking questions).

My question revolves around practicality and what I should purchase to fish
locally. We have a ton of lakes and one very good river (the Huron River) in
my neighborhood. I would be fishing primarily for large mouth and small
mouth bass and pan fish. Is there a single rod and reel that I could
purchase to fish this variety of species - maybe a 6 weight? At this point,
I am looking for lower end/beginner equipment because I am just beginning
and would like to get my 15 year old son involved too. So, quite frankly, I
am looking for something that would get us started and something that we
could use to fish for the species I indicated.

Thanks for your help and advice.

Oz