Advice for building a telemtry kit for peddlecar

Hello,
I am working with a team on a project for our university and I am in charge of the telemetry system for it. It is a human powered pedal cart that will be put through a very rough obstacle course. They want to stream two gopro cameras, track location(gps), acceleration, and probably some of the forces on the frame. I have been looking around some and I think I will need a mega, gps shield, sdcard shield, and shields with accelerometer and compass. Any help would be appreciated advice, links. I’m also a little familiar with processing so I’m trying to find any good prebuilt programs to graph the information and help with logging the data. Thanks.

Check - http://shieldlist.org - for some inspiration for the hardware.

The video cannot be streamed by an Arduino, forget that, use wifi

Have you checked the tutorial section? There is code for most of the sensors you mention/need and it will learn you how to program the Arduino and get the communication up an running.

how far will the car be from base?

Thanks you for the link and the advice, the track will take the car about 100 yds away from the computer. I'm having trouble finding ranges on shields but from what I've seen from customer reviews it looks like anything with an internal antenna is going too short range for what I need.