I do not know the cost or if it is available but Aristo offers bulbs that have a spectral response for VC papers that is superior to bulbs that 15 are more years old. What can it hurt to ask Aristo and to consider the expense.? The fact that you have a filter drawer will come in very handy. If you can get strong green lighting gel made by Roscoe and use that inconjunction with the coldlight bulb as split exposures you may find yourself very satisfied with the coldlight and VC paper. I would expect the Roscoe filter to be fairly inexpensive.