You toast your acrylonitrile fibers, too? I assure you that laminating and cooking your own prepreg will not violate the BOM. Using store-bought precooked sheets might. It's a gray area.
Stunt plane spar caps have an equal amount of tension and compression (right, Mr. Stress Man?). The yellow stuff is useless in compression. If you have enough carbon to take the compression load, it will take the tension load, too.