most wrasses, regrdless of family, are easy to get feeding. you should not have any difficulty feeding wise. as for disease, fairy hardy and resistant when compared to tangs, but still fall prey to the scrouge of diseases i.e ich, velvet etc. the only thing u have to worry about, is aggression. wrasses being jumpers, are very prone to jumping out when harassed. timid ones might not come out of hiding and eventually starve to death.
flame wrasses imo are very shy. so make sure u have no aggressive fishes or u can kiss this baby good bye