I am going to build a direct drive 5 watter, I want to use the M@glite c body. I want to get max performance out of the 5 watter, but it is a "T" bin, should I only go with the 5c cells because of the lower vF? I am not sure what the voltage drop will be? Does anyone have any experience DD a 5 watter of this bin with alk. cells?