Joined: May 2016
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Lindholm should get a return better than Muzzin did, as he's a higher ceiling defenseman locked up to a fairly long term and team-friendly contract. So start with a 1st round pick, an A prospect, and a B prospect. Kase is 2nd and a quality prospect, if not a 1st himself.
Grzelcyk might be a stud, but he's 25 and will be a free agent with arbitration rights. If he's as great as you say, that means he'll get a hefty pay raise over a short term and likely go the way of Jacob Trouba very soon.
So if you're trading for both Kase and Lindholm, you're looking at a 1st round pick, a 2nd round pick, an A prospect, a B prospect, and a roster player. Let's say Grzelyck is fantastic and can fill both of the B prospect and roster player slots. You're still looking at the Bruins' 2020 1st round pick, their 2021 2nd round pick, Grzelcyk, and one of Studnika or Beecher. They'll take Moore if you need the cap space, but he's not going to add any value to the trade.