Alterations to pour over 1 cup method?

Evening everyone,

Just got my pour over set in the mail and been doing some research on the James Hoffman 1 cup/person method.

I want to make some tweaks as I want to increase the overall volume from 250g to 350g but maintain the same ratio of coffee.

I have calculated that to achieve this I'll need 21g of coffee as a base, and adjust according to taste, profile, beans etc (I am an espresso enthusiast but my partner likes pour over so I wwnt to get the technique down).

However, when it comes to the pour method and timing, do they still remain the same? That is, 50g of water every 45 seconds, or do they also increase? If so, what should I adjust my timings and pour volume to?