I'm writing a story that has this background: Malkavian Methuselah Seer sees the Modern Nights and the fate of his sister, who was embraced by the Ravnos clan, and decides to mix up things up to alter that future. With the help of said sister, he makes a breeding program to create a what he calls a Clan-Seed. They join the Sabbat for this secret purpose alone.
Male Malkavian Revenant and Female Ravnos Revenant make the maternal grandmother
Female Malkavian Revenant and Male Ravnos revenant make the maternal grandfather
Male Malkavian Revenant and captured kuei-jin Dhamphyr make the paternal grandmother
Same kuei-jin Dhamphyr and Male Ravnos Revenant make paternal grandfather
The Ravnos Sister blood-bonds the Son while The Malkavian Seer does the same, with the Daughter before having them breed the the new family. For centuries, the family grows, with the occasional new Ravnos or Malkavian ghoul added to the bloodline.
After 300 years, Caine himself meets the Siblings and they make a faustian Deal with him, and the Dark Father adds his own ghouls and revenants to the bloodline and another Cathayan Dhamphyr is captured for the bloodline.
Something big happens, and the Sabbat Cell is wiped out along with most of the Siblings' revenant family save for a few dozen that survive and scatter to the winds. The Siblings separate; the Malkavian Seer waits within the ranks of the Camarilla and the Ravnos Sister enters Torpor and remains hidden.
Three years after the wipeout, my character is born—the youngest of three—and in 2004 enters the unlife.
As you can see, I put A LOT of thought to this, and I really don't want it to go to waste. So, to VTM experts out there, is any or all of this possible or am I going to have to say screw it and pull creative license out somewhere?