No, 30' is not too small, with the right kind of boat. If you are looking for a large aft double birth and two heads, forget it. If you are looking for comfortable accommodations, with small but appropriate amenities, there are several boats out there that will work. When I look at the people living on 30' or smaller boats, they are usually very happy, but have done what most of us will not do, which is to get rid of the extras that make life easier (and usually more complicated). This is getting way to philosophical, and I've not had enough beer for that....
I would be very happy on a 30' boat, unfortunately my wife is unlikely to be very happy on anything less than 40' (particularly after she saw the Hanse and Tartans at Strictly Sail in Chicago - really stupid mistake letting her on those boats). Be patient, find the "right" boat, and get rid of everything you don't need.
Saginaw Bay, Michigan
"The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails." - William Arthur Ward