What do you do when you inherit some gear that you don’t want.

I have purchased and sold on here in the past.  But now I have inherited some gear that my father purchased but unfortunately never was able to hear assembled.  Please keep in mind that all the gear I list is still in unopened factory sealed boxes.  1 pair paradigm persona 3’s carbon black,with grills, 2 kef  KF92 subs, 2 each Parasound A23+ amps in black, Parasound A6 preamp, black, along w straightwire bi amp cabling..  i am favorable to keeping the Parasound and kef subs, I feel that the Parasound gear is quality neutral to me.  The paradigm persona 3’s are a different story.  I have paradigm founder 80f’s powered by a Arcam SR2500 with 2 sunfire subs rebuilt by Flannery.  The Dirac and sub crossover on the Arcam works well, at least for me but that’s enough paradigm for me in my life.  I don’t think I will like the beryllium tweeters in the persona 3’s and neither will my dogs, 45k?  I would like to keep the Parasound gear and kef subs, I have no interest in the speakers I would rather have a pair of Vandersteen trea CT’s or Totem acoustics to use the Parasound and kef subs with, any reasonable opinion is welcomed.  Also, if I were to sell the persona’s how do you ensure safe shipping to the buyer and determine the shipping the cost?  I’ve never shipped something of this size nor value,