I saw one of the Maple Bay 22's on a trailer a few years back. It certainly is a substantial boat, but don't expect more than 7-8 knots. (The spec sheet says 8 knots cruising and 12 max--I would question the 12 knots max. She would be a very economical trawler type at 6.5 knots, and ideal for the Inland passage. With 50 gallons, I suspect you could get the "mileage up to over 10 miles per gallon, and have a range that would be enough not to worry. These boats can roll a bit. At $14,500, that would be a margin, if she is in decent condition. The almost 1400 hours on the engine, would not worry me, if she has been maintained well. But an engine, as well as a hull survey would be in order. Look for soft decks, the usual things in a fiberglass boat.
In comparison to a C Dory 22, you do have more cabin room in the C Dory, and the C Dory will not roll as much, plus the speed of the C Dory is an advantage. But in chop, this Maple bay will keep on going, and hold her own. There will be some spray, but not overwhelming. Remember that she will probably draw about 2 feet, so the shoal draft advantage goes to the C Dory. As I recollect the boats have a full keel and prop protection. A great little pocket trawler.