I would look for a 3500-4000 lb capacity dual axle trailer even though thats a little overkill:
1600 lbs dry hull weight +
1200 lbs motor and gear +
700 lbs trailer
totals 3500 lbs.
If you get a dual axle trailer it trailers real nice, the wheel bearings are very lightly loaded and with enough weight capacity a flat is not a total disaster. The biggest drawback I know of with excess capacity like that is having stiffer torsion axles/springs; martinis in the cooler get shaken, not stirred.
BTW - I love your thread; beautiful work thats totally worth standing on my head to look at.
