I'd highly recommend starting form scratch. There are tooling for:
-Subtle (female + superstructure)
- E5 (Plug, on the isle of white - buying shells of Andy P is a very good idea)
-Marmite (female + superstructure)
-A&E (Male)
-Cool Beans (Female, longitudinal split)
-Poppy (Male, sarcophagus - not available till October)
Now all of these will need some negotiation/deposit/purchase of tooling, but all except subtle are currently empty.
All could be made on a budget and you'd learn the skills needed to finish the boat form doing the shells. Andy P's offering is also amazing and the advice you'd get from him is as good as you'll find on this planet