I may be completely wrong.. However I believe the only professionally designed F16 or F16 style boat that is available, at this stage, to home build is the Tiapan 4.9..
Go to the F16 home page and look up the links to tortured ply home built Tiapans. The T4.9 guys seem to be very willing to share their experiences. Well built Tortured ply hulls can be very fast, strong and light. In fact I believe many decade + old ply T4.9s still are at the sharp end of the T4.9 solo Au titles. The downside may be ply hulls need a litle more off-season love and care..
The only other alternative may be to purchase completed hulls from Stealth, BIM ect and build the platform up from there.. Not sure how much if any you will save..