Cadwell is my local track, my come down for a 370 meet? I also plan to take mine on track this year. Cadwell is a amazing circuit, you will love it. I would try to take some jerry cans with you, as the fuel at the track is really expensive and its 25 min round trip to louth shell to fill up otherwise. As for insurance, I have done plenty and never had it. But Cadwell is narrow and if you did come off your never far from a wall. I would not bother personally but its up to you.