It will make climbing those rollers easier. How much still depends on how much you continue to train. Never think that since you got nicer equipment you can train less.(not saying you are thinking that) But you will have to get used to handling the wheels in a crosswind. The back wheel there isn't much of a difference but you can feel the wind push you with the front wheel. A few rides out and you'll get the hang of them. Assumming you keep your old wheels still use those to train on. I will make the upgraded 3 lb wheels feel like a feather.