Thanks for sharing this @brendio , as a father of 3 children, all I can tell you is, be prepared to an emotional roller coaster. My children are all grown up now so I can tell you that it never stops. Congratulations and good luck.
And if I may pick on you just a little bit more about Lego, you seem to be OK with different toys for boys and girls, but you also said that your wife is a Lego enthusiast too, so don't you think Lego might be missing something?