if you check out "my yerf upgrade thread" around page 3 or 4 shows the roll cage and new front and rear tubing i did. I bought 50 foot and used probably 10-20 foot of previous tubing that i cut up and re-used. It's surprising how fast you go through it. I'd say that you're going to need close to 100 foot of tubing. don't know where you're at location wise, but
www.PASteel.com has good pricing and several distribution centers the public can buy from directly.