Blood and Short Tailed Pythons may not be too large for your husbands liking and are certainly eye catching to those who have interest in the larger python look. Not sure if you're looking for something specifically that your kids will be able to handle, in which case they may not be the best choice, but they will certainly not be in any danger being in the same house.
Then again there isn't much danger having children in the same house as larger constrictors if they're housed properly and secure.