This is certainly an entertaining concept, however, Palpatine is strong in the force and has had a significant amount of training so I can't exactly see how you could make this work. However when comes to role-playing with other people is generally advised to refrain from even mentioning the force in public. Maybe you could think of some form of an in character cover story for example maybe your group is a shipping company that transports freight from one planet to another or something like that. Reason being people in will inevitably ask questions in-character, and I'm not entirely sure the response "I'm a Sith Lord training a bunch of force users in space" is going to get the most positive reception from many people. I would also refrain from using the title Sith Lord. Because technically there are only two Sith, Darth Vader and Palpatine. However, that does not necessarily mean that you aren't a Dark Force user.
That having been said if you want to try and put a story like that together then go for it, be interesting to see a story like that.