Those are rookie numbers, you gotta pump those numbers... down! After years of honing my flow, the TTE (time to espresso) is 6 minutes on gas, it'd probably be closer to 5 with an electric kettle. (I use a Comandante)
https://www.reddit.com/r/FlairEspresso/comments/j53vy0/fello...
Sibling suggested heating the chamber with the kettle, in my experience that has caused the silicon wrapping to deteriorate.