I didn't mean my wife and kids were a problem, just in reguards to finding a boat to fit them all in. Just wondered if anyone had an idea of were to start looking for a boat big enough. Doesn't sound like it. Thanks for the advice anyway.
It really depends on what you and the family want. If you are looking for an apt on the water...some more options open up....you don't really care about the engine.
A power boat is a LOT roomier than the same size sailboat. Downside is that power boats need fuel, at +$3.75 gallon to do much of anything. I can use my boat all year for less than 30 gallons of fuel.
Both will require maintenance and hauling and cleaning at least every two years. Heads with your crew aboard, if they treat the head like most families do their toilets, will be a never ending source of entertainment and at least a weekly trip to the pump out station, even in winter.
If you are like us...the walk to the bath house for showers and (see above) are over 1/4 mile round trip. Few sailboats are in covered slips so rain and snow will need to be dealt with.
Water is a full time job in freezing weather.
Kitchen and shopping will be at least a twice a week shopping deal as most boats in your size will not handle a full weeks supplies for 5 to eat like they do in a house.
Kids will need to be well disciplined, else you will have issues there and even more so with slipmates who may or may not relish, kid stuff and noise and antics. Some will tell you, others will tell management and you may be asked to leave.
Yachtworld.com is a great place to look, walking the docks at marinas off the main and craig's list would be a close second. Thirdly would be the charity auctions or boat museums who sell boats.
All the best, and for sure try it out. I would go with the wife and/or one of the kids at first, just to see how it works. Again if you are looking for an apt...don't bother...But do put some safety items high on your list. If the kids are young...PFDs any time they are not below. You can decide when/if to allow them to do with out as they get older/more experienced/etc...