Still, what I feel is the worst bid at all is 3♣. The hand has way to much potential for a meager 3-level preempt. Either you go scientifically (Pass, 1♣), or you go all the way with a preempt; 5♣ for me, spurred by the vulnerabilety, 4♣ for the more sane. Still, I'd hate the position I would be in, if I open 4♣, and has 4M passed around. The restrictions that RHO's, silly (make these decisions in advance), huddle has placed upon LHO, might convince me to bid only 4♣, if I choose to preempt.
I would not consider 4♣ to be a "daring" bid.
I do not know what "B-flight" means, strenght-wise, but the less competent I expect my opponents to be, the more inclined I would be to open 1♣. I will not pass; when the auction becomes competitive, my dear partner has the right to know that my clubs are significantly better than my diamonds.
To open any diamond bid, my opponents would have to look like walking heart-attacks, and I would have had to have one.

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