If I understand what you’re proposing, Eastern used this technique for take-off into potential wind shear situations. The idea is to determine the longest suitable runway and use the max weight speeds for the min flap setting that the particular runway will accommodate. So if light, you’re using flap 5 with the higher speeds of a heavier weight along with the longest (logical) runway available.
I've used this technique flying out of DIA, ORD, and smaller hubs; current company does not have a policy on this matter. As long as I don’t exceed the tire speeds and have 35' by the end it seems sensible.