I would be concerned with your stator and your battery
Both your stator and your battery will have additional load on them.
If your stator can feed your batter under these circumstances then the batter may have a bit of a reduced life but can more than likely handle the extra 25 - 30 watts.
My primary concern would be the extra heat generated by the stator under these circumstances. Heat is a bi-product of electric generation, call it waste. This heat will increase the temperature of the windings and possibly accelerate the decay of the insulation protecting the windings from touching each other and grounding out your stator. Additionally, your rectifier will experience additional heat and would experience a degraded lifetime as well.
I would suggest using LED lights that would consume less wattage and potentially give you increased light and visibility you are attempting to achieve.