I would make sure you confirm the line is not compatible, there are quite a few people on both sides of the argument, I honestly think there might be two different lines of green ghost. I mean how else can people claim they are compatible and some claim they are not?
I honestly don't even think you would be able to tell if you hit the double homozygous, but maybe something cool might pop up. Then again there is the risk of a bunch of unknown lines of hypos, be prepared for that.