I'd start by looking around to see what used boats you'd like are priced at. That will give you a better idea.
Also, where do you live. Down here in Florida we have some really good salvage yards that might have a usable mast and rigging. Do you have anthing like that avalible.
ARE THERE ANY OF THESE SALVAGE YARDS AVAILABLE ON THE INTERNET ,COULD YOU GIVE ME THE NAMES OF ANY OF THEM?