Looks like a great day. I did a similar thing at Thruxton, but in an Aston V8 Vantage They are great days, but I know waht you mean about being over too quick. I didnt get a proper poke about in the Astons interior either, tbh that was the biggest letdown of the day in that they just rush you in the car and off you go.
Next up is a Palmersport Day, but at ~£800 its a bit of saving up Although PH are doing a day in March for about £650