Just a small caution, if I may...
A lot of buyers seem to get hung up on two numbers when they look for a "big enough" boat for the family. These numbers are a "3" and a "0".
Before everyone started hocking their second mortgage for a second home at the dockside there were a host of boats built in the late 70's and early 80's that are about 29' long.
They sailed fast and easily
and were really the last holdouts from a time when a boat was expected to be fast in local club racing and
then easily sailed by the whole family for weeks of summer vacationing.
Look for a King-designed Ericson 28 or 29 (or a 30 for that matter), a C&C-designed Newport 28, a C&C 29, a Lapworth Cal 29 (or a 2-29). There were the Shaw Pearsons, and the S2 30.
I apologize for omitting some worthy names, but do look for sailing pedigree
We spent a year looking for boats in the 30 to 32 foot range and were aboard every one on this list and a lot more... (worth mentioning was a great Jeaneau 32 Atalia from the mid 80's).
We finally found a run down longer/faster cruiser/racer that we still have, 15 years later.
Your boat is
out there, somewhere, waiting for you....
Edit: Be sure to visit the many different owners' web sites for the various makes and models. Most will be glad to tell you what to look for and explain the differences in model lines.
Of course (!) I would put Ericsonyachts.org at the top of that list...