If someone’s gone this route and it works then keen to know.
I have obvs. https://www.pedalroom.com/bike/brompton-s2l-38727#photo317242
The bike might get a bit lighter as I am going to install the JK Carbon mid rise bars, Paul comp brake levers and a standalone 2 speed 'shifter' which is just a MTB shock lockout remote. BUT I am installing SP Dynamo wheel and Supernova light so might be zero sum.