Thanks everyone; this discussion was just what I was looking for. Didn't know about wick trimming, for instance, though people are always doing it in old novels. Now I see why. Keeps down the soot.
After looking at the Aladdin and Trawler Jr lamps, I decided that the small Weems and Plath lantern was my best choice for this small craft. The small gimbal isn't sold anymore, but I imagine I can buy the large one and adapt it somehow. I ordered the small lamp off Etsy. Looks like I won't be able to read by its light, but it will take the edge off the chill, and I can also use a rechargeable light too if I'm reading. No burning lamp while underway or asleep for me, of course.
So W&P parraffin oil is about a dollar an ounce. I wonder if the cheaper oil I'm seeing online, such as Hyoola brand at about half the cost, are just as good? Thanks for any input.