Hi Chris,
Having built a Swordsman or three the best tip I can give you is -
when you cut out the keel, extend it to include a half inch strip at deck level and down the transom.
Bulkheads are notched at their tops/centres to accept the half inch strip - you now have a self jigging structure locking your bulkheads vertically and the transom at the correct angle, the strip along with the tops of some bulkheads is removed after skinning.
This assembly requires mounting on a flat surface building board, hull upside down for ease of fitting chines / skins,
I use small 90 degree timber triangles, screwed, double sided taped or hot glue gunned to hold the structure in place.
Also highly recommend a Permagrit Ali framed sanding block - for sanding the keel and chines before skinning,
ie. the block sits on the keel and is wide enough to span across to the chine and sand both surfaces true.
Permagrit are very sharp and require little pressure when sanding - important as too much pressure sanding the chines
could pop glue joints, resulting in chines springing loose and poking you in the eye - speaks voice of experience re that issue !
regards Paul