Ultimately the choice is yours. Just that you have to be mentally prepared that it may turn out to be a multiple preg. But I know where you're coming from as I have the same thinking, to boost up my chances and just gimme a baby! Haha.. So have a good thought over it and discuss with your hubby ie blast or no blast; ET 1 or 2. It's true that there isn't much time for you to think there & then at the ET room. Go with your gut feel and don't look back on the decision you made coz there's no right or wrong. Good luck!