Jim
Hard to make suggestions to a pretty mcuh fixed agenda, but here's an attempt!
1. Chill out in the 1st 3 days in Ayrshire. Don't rush around looking for hidden gems, because there ain't that many in that part of the world. If you have free time, play the Kintyre or visit Alloway to see Robbie Burns' history, or visit Culzean Castle to see soem of Eisenhower's.
2. Do the full Monty at Muirfield (18, lunch, 18 more). Scrap N Berwick or play it in the gloaming (tee off at 6-7pm). There will be time on your next trip to play it, regardless.
3. Enjoy the town of St. Andrews. It is a true gem, and try to get away from the places that the caddies and the Americans stay (generally the same places--the caddies know where their bread is buttered, and/or their pints paid for...).
4. Play the Eden when in St. Andrews.
Otherwise, you have more than enough for your 7-8 days to keepyou ocupied.
PS--as for the weather, it SHOULD be dry, but I just hosted Tiger Bernhardt, and we played in a 2-3 club wind and barely tolerable rain on Tuesday. He was supposed to play TOC yesterday, when the winds went up to near gale force. I wouldn't be surprised to hear that he had been blown out onto an oil platform in the North Sea.