If you are only doing this for one day I'd take an instructor. Get your US certificate as well, save it for next time.
Insurance. Well, last time this came up on here it got heated. Posts edited, PMs flying around, lots of nonsense spoken.
Basically, you need to buy insurance separately, will cost $200 or so for a year, talk to the insurance compay for details of what is and isn't covered. If you take an instructor you will not need it as he will cover you. You can get several hours of instruction for $200.