Wheelbuilding / Wheel Building / Wheel build help

Yes, you're going mad. Spoke count and lacing on their own are not determinants of spoke tension. Spoke guage/material and principally rim strength are the determinants of maximal spoke tension. The combination of geometry (flange sizes, rim size, count/lacing etc.) with load regime will give the minimum spoke tension at which no spoke will lose all of its tension while the wheel load is within the design envelope.

From what I remember spoke type/material/gauges were also listed. But ultimately it is down to rim manufacturer's ratings.