Darth Venal said:

I don't get why the conversation would take place in Ben's house at all. On Tatooine, before Luke goes to Jabba's Palace, sure. But why Ben's house? I don't think a Force "ghost" would have any reason to cling to its living domain, he's not a ghost in that sense, surely.

Maybe put the scene into a Jabba's prison cell... after he killed the Rancor? Coud be easier to do cause Dagobah is kind of a dark place too. (I did not think about all the consequences on the other scenes though, just a quick thought).