I think you should be fine, but you never know what may happen between now and then. Depending on the age of your kids and how important it is for you to all be together, that would be the key factor. If your kids are little and it is important for you to be seated with them, you may want to bite the bullet and just get reseated together in E-, because if the flight fills up, the only option may be to scatter you around. If your kids are old enough to not be a big deal if you're a couple rows away from them, I'd say it could be worth it to try your chances and see what happens.


EDIT: Didn't see OP's next response about his solution. Above could still be good advice for others in this situation, however.