Using Proj4 to convert GPS to Project Coordintates

[Mike Smith]

I understand how to use offsets if I apply them to the projection, but I do not know how to accomplish this with proj when a scale factor is applied 'after' projection.

cs2cs +init=epsg:4759 +to +proj=lcc +lat_1=40.78333333333333 +lat_2=39.71666666666667 +lat_0=39.33333333333334 +lon_0=-105.5 +x_0=214401.8289 +y_0=4800.6096 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs

Project Coordinates Northing US Survey Feet = (State Plane Coordinate Northing * 1.0003524827 - 300,00) * (3937/1200)

Project Coordinates Easting US Survey Feet = (State Plane Coordinate Easting * 1.0003524827 - 700,00) * (3937/1200)

Example:

Point (-107.93401533072986354 39.70092255644921408)
PID17108
PROJCD 19430.19 159453.9 7433.681
SPN 705673.597 348478.813
LAT/LON 39.7009225564 -107.9340153300​