I'm looking at a late 90's caravelle interceptor. I don't know much about these boats other than a caravelle is a pretty good boat. I don't however know anything about the interceptor. It's 21ft. with the 350 merc. Claims the engine was replaced a couple of years ago and interior redone. Haven't seen it in person yet. What would a reasonable price be in fair condition, and any negatives to that hull design. Thanks much