Re: will a center console work?
Almost any CC in the size range you are looking for would make a lousy family boat and adding several feet will make it only marginally better.
If you want to fish in warm weather (you didn't list where you live), then a CC might be the right boat. Most have little or no protection for the wife and kids though, so they get to sit in the wind and weather when ever you're cruising around. This can be OK for a short time in good weather, but gets old fast, especially if the weather turns nasty. Seating can also be an issue, the skipper and possibly one other person get an OK seat, the rest get sort of an after thought spot to sit that may have a cushion or something to try and make it comfortable, but it can be awkward.
I have 2 CC’s so I deal with this all the time, I would rather have a different layout. One I gutted and changed it totally, the other one is turning into a long term project and will be changed.
Some new CC’s have better layouts, but I don’t think you’re talking new.