Your option B looks like the best approach. I hope that you're not forgetting workers comp, unemployment insurance, your SSI & Medicare contribution & any other benefits in that hourly wage rate.

Prevailing wage rate jobs are bid the same way. Usually, the prevaiiling wage rates are given out as part of the bid package & the GC should be able to furnish them to you. Keep in mind that you may have to furnish a certified payroll, and never pay anyone an apprentice wage unless that person is enrolled in a state approved apprenticeship program (this one can really get you burned).

Tom

Few things are harder to put up with than the annoyance of a good example.