I recently founded a career coaching practice focused on college / graduate school students and recent graduates. In a sense, my target customers are (affluent) parents concerned that their child doesn't have career direction, isn't receiving sufficient career planning and development support from their college / university, and either can't find or may not be able to find an internship or job. At this time of year, particularly for juniors and seniors, the latter is a sensitive topic.
In general the highest converting direct messaging campaigns I have seen have very direct and simple messages. If you can achieve that with your target audience then you will see a good conversation rate.
If you have the right message and already have the contacts, then go for it!