That’d be really cool, but I think it’s impossible because Chewbacca would have to still be alive. He dies in the Vong war, if I recall correctly. So you’d have to place it before the Vong war, which means you can’t kill of Han Solo or pretend Kylo Ren is Darth Caedus. And then all the characters are older than they should be.

The only possibility I see is to have recolor all of Chewbacca white, and pretend he is some new Wookie Han’s replaced. Which is frankly disheartening, but fits into the canon.