I try to move Marvin, Jefferson and Rush. Biedrins isn't going anywhere with that contract. At least the other three have the potential to help someone finish out the season without being a burden. I'd also probably look to facilitate a deal for a team and help make the pieces fit. If you can get any quality assets for those three guys, I think that you'd have to make the deal. They're all expendable contracts and players. Moving them ultimately gets more minutes and playing time together for the young core players. Win/win.
I wouldn't trade any of the Core5, Evans or Gobert. I'd like to see more of that group together before I'm in a hurry to break it up. Just think that there's so much potential for every one of those lottery picks to turn out well. Add a superstar to that lineup and they're in pretty darned good shape IMO.