There's a couple typos in the last option but once a poll has been made the questions can't be changed :# It should read "Both and play an overstuffed household" I should have stopped when my sims...
Why pick just one? Play them both! That's what I would do if I managed to make it that far. Usually, my sims only have 1-2 kids though, but when they have 2, they live together still. I've never had both find love though; usually just 1 and sometimes even none! If they both have husbands "lined up", go for both!