Good, small cruising sailboat?
Find a trailerable boat with good sailing characteristics and a good reputation. If the head is enclosed or at least has a door to the head/vee berth area you have your basic work done.
Electrical outlets and shore power can be easily retrofitted to any boat. Refrigeration is also something that can be added.
Buy the boat that has the items and characteristics you need that cannot be changed and then feel free to add the rest. As always it is more important to buy a good boat than one that looks great on paper for its features ...
My opinion only ... but we stay on board a 26'' boat Fri & Sat nights with two adults & two children from May thru Sept.