I'd ditch the plastic cuff links just in case they might cause some sort of staining. Unless the cuffs are pressed back and creased, I wouldn't worry about it-- and even if they were creased the only harm would be a slightly increased wear factor. You will probably wear out the collar before you wear out the cuffs, creased or not.

My very best evening dress shirts, which have detachable collars, have barrel cuffs not french cuffs, and no one seems to notice. My less formal evening dress shirts have attached, fold over collars, and french cuffs. I always fold them back and press them down before wearing.

With either style of shirt understated, plain gold, cuff links are always your safest bet. A gentleman should never look "flashy".