moa999
2020 3 SR+ MSM
Two things you should get done when the electrician visits, get a Surge Protection Device (SPD) installed and also just for a safety point of view, install circuit breakers.
You've certainly got plenty of power, but I suspect most electricians would be recommending a total board change to give you better protections.
How close is the board to the garage? Might determine whether worth doing or going the sub board route.