Altitude and power goals

Hi there, I wanted to ask you if I should take elevation in consideration when setting my power goals; I’d like to reach the mighty 4w/kg, at my current weight that would mean 304 w. When I export my activities to strava, the sauce add-on tells me that my estimate power at sea level could be 13.6% higher; would that mean that my 4w/kg power goal is 267w if I keep training like I’m beigng doing at around 2600 m / 8500 ft, or altitude doesn’t matter here?