I feel silly asking but will the new bodies be male and female and will the family unit that we have on earth be reunited?
It is likely how Adam and Eve lived before the fall is how we were always intended to live and how we will be returned when this is all over.
They were created as they were supposed to be and how they would be, if they did not fall.
Jesus said there is no marriage that survives in Heaven.
I see no reason why we couldn’t “look each other up,” but otherwise, no.
Matthew 22, Verse 30:
For in the resurrection they neither marry, nor are given in marriage, but are as the angels of God in heaven.
Regards,
Jesus addressed no marriage and we will be "like" angels in Matthew 22:30 and Mark 12:25. That doesn't mean we will be angels, but there will be a semblance: probably reference to bodies not subject to decay and such: fit for eternity.
Forgot to show you 1 Cor 15:52-53. This is a key passage on imperishable being put on when we are resurrected.
Will we be with family? Depends. Are they saved by Jesus Christ? 1 Thessalonians 4:13-18 is your passage, pay attention to 17.
Will we be as a family unit? Much different. We will all be in one family. The family of God. Matthew 12:47-50, Jesus is teaching who the real family is, not the earthly family. The only relationships that go into eternity are those who respond to the Gospel.