I do sprints on almost all the rides I do.
My biggest issue is the gearing. I've come to learn that if I'm not *almost* spinning out the gear while seated, then I'm not in the right gear. If I'm pushing the gear hard, I get no snap and top end. I'm teaching myself to shift while sprinting instead of failing by doing it beforehand.
My wattage is similar to yours except that my FTP sucks haha.