Aiden,
I used a MINI without the sunroof for a day, and it seemed rather confined and gloomy within, compared to mine that has it. I also just had "comfort opening" programmed, and it's such a pleasure to open up before you get in, as well as impressing admirers no end (I don't have many admirers, but the car has plently!). I don't like A/C much in any case and note from various posts that it seems to be a drain on the car's performance.
As for colour, DS looks just fine in overcast weather, but I can see why you might go for CR/W, it is a great combo. If you do get a sunroof, DS/B is the way to go IMHO - it looks great. I know the roads in Ireland a bit, and think you're right not to bother with MFSW, I certainly have no regrets on that score.
Have fun speccing your car, but remember, the main ingredient is what comes as standard!
