Absolutly you can, Plans for the Blade you can get from Phill Brander, or Taipan plans from AHPC. Plans cost around AUD$250 (but contact the above to be certain)
How you are talking about building in pieces is exactly how I've did mine because the cash flow then was a bit slow, it took longer than I had planned, working away from home etc, but I couldn't be happier with my boat and the way it performs.
I should say at this point, that mone is not an F16, but could be, if I added the kite.
A search through the forum will show lots of discussion on homebuilding, and check TonyJ's a couple of threads down or Rolfs in the homebuild forum at the bottom of the main index.
Regards