@Dave Isaacs like others have identified, the motor would not be enough power in certain situations.
It really depends on where you are planning to use the boat. Running a boat in a river with currents, against a tidal current, in a seaway against the wind, you need to have the power to get where you intend.
In and out of a marina in a somewhat sheltered location in moderate breezes to raise the sails and depend on the sails for your power, then it might be just fine. Many boat owners think direct path is the best, so we point a boat where we want to go and go. If the wind is not cooperating we call it motor sailing and wind the sail up and fire up the “iron genny”.
Remember it is a sail boat and for centuries folks sailed where they wanted to go. Sometimes the wind favored the route. Other times you had to tack back and forth up wind. You still got there just not directly.
It will be you boat and so you need to decide how and where you want to use your boat. Then buy a boat that meets those needs.
Of course I share this bit of wisdom having bought a 17,000 lb boat with a 47 HP Perkins and I’m installing a new prop which I hope will improve my power performance. For me it fits the nature of the cruising I do up here in the Pacific NW where the currents are strong and demand the Captain have a strong sphincter as the whirlpools try to wrestle the helm from your hands.
