Welcome. It's hard to say what your particular boat is worth without seeing it but I can tell you that a ball park figure is between 1.5-3.5k depending on it's condition. Of course that's just a guess from what seen lately.
I agree with everything everyone has said so far but if it were me I would not be boatless....get a used engine and fork out the 200-300 a year in maintence. Your a good dad....I wish my parents had helped me with some of my college tuition
strick