Do not let your children go anywhere near the Kingdumb Hall.If you want to teach them Christianity take them to a main stream church for a balanced religious education.
I would say that taking them near a Witless meeting place is like letting them play near a motorway, very dangerous. It would be a good idea to suggest to your husband that before you have children together that both of you go to one or two of the main stream churches to see how they compare with the Jdubs.Go together for some other religious instruction you can tell him that it can always be rejected if it's not what you want.If he is afraid to take that route ask him is his faith so weak that it won't stand up to comparison first hand.
Think of all the GENERATIONS of children that have been born to the J Witnesses, who are now old, that have spent their lives in futile persute of a make believe promise.Think of all those wasted lives that could have been spent doing something really worthwhile.