Check this site out: http://www.setsail.com/s_logs/martin/martin.html
The Martins have done this. Actually they had their 2 children while circumnavigating. They have written a couple books. I suspect most on this forum will try to deter you as has already been posted. Additionally, Cruising World Magazine recently had an article about an organization out of somewhere in Canada, that is all about getting people cruising. Check out thier website here: www.cruisingworld.com
and do a search for cruiser's organizations. From these two, you should find a wealth of information on your specific ??'s.