Nait,
If your goal is to economize and get into sailing on a modest budget, building your very own 38-50' steel boat, whether from scratch of from a bare hull, is probably the very last thing I would advise.
May I suggest that you downsize your range to an older, but solid, 27-33' fibreglass design?
It's basically an easy choice between going sailing this decade, or at the end of the next one (and even then you'd be defying the odds).
