hello and welcome to u both.
one of our members has posted a lot on this subject and i hope he won't mind me linking it here:http://www.orthodoxchristianity.net/forum/index.php/topic,49912.0.html
the thing that has worked for me (and many others here) is to take it slowly.
realise that your aim is to get closer to God, not to join a particular church.
of course, joining the orthodox church makes you closer to God (as i found out 5 years ago; was formerly protestant),
but sometimes waiting patiently and learning to love your spouse more contributes massively to your spiritual growth.
it is worth the wait, even if the other spouse does not join the church, as waiting and learning to love patiently, to forgive and to deal with your own faults is very valuable.
talk to your priest and older or wiser friends in church and decide (no rush) if you will convert by yourself now or wait.
whatever you decide, tell your spouse something about your spiritual journey, even if he / she has no belief in God, he / she should learn about what you are interested in.
in return you also need to show some interest in the things your spouse enjoys.
as for the children, it is something you should discuss calmly (!) with your spouse and also with the child if you think he / she is old enough. take your time. take the child / children to the orthodox church and let them see how much you benefit from your relationship with God and how much you love to pray at home.
putting pressure on people (including older children) is often the quickest way to push them in the opposite direction, so listen, talk and then listen again.
work on your own spiritual life so you have something to share.
eg. be the first to say sorry after an argument.
enjoy the journey!
may God bless you both very much and give you peace and guidance and may He bless your families too.