”Is a FAA medical and liscence required?” – No, you can fly on your CAA/JAA license BUT and the big but is that you need a US licence conversion. You need to organise this before you make arrangements to fly in the US since it does take a while to get after the Sept 11th problem. But you will be checked out by an FAA instructor who will ensure that you are safe to fly.
”What would be a suitable aircraft to hire, and rates?” – The best aircraft is the one that is closest to the one that you were trained on but Piper PA28 Warriors and Cessna 172’s are the most common rentals. Rates- vary between about $70/hr for an old basic airplane to around $115/hr for a late model with lots of toys in it. That includes the fuel and the current exchage rate is around £1.00 = $1.79
”where the best and most suitable scenery to fly over is?” - If you are low hour, stick with something less challenging, Florida flying is really tame for starters and is really interesting at first!
”Is a week long enough, and what distance could you cover?” - A week is never enough for somebody who enjoys flying and the distance covered depends on how long you rent the airplane for and where you fly it really. There is a lot to see in the US and lots of airports so it’s not necessary to fly hundreds of miles although very easy to do so.
”Enough questions for now” – Enough answers for now?