Late to the party but I'm of a similar mind set to cwd in regards to a 4 day HL split (which I'm now commencing myself this week).
Ran GGW for 3 cycles but feeling I now need more volume especially for pressing and to keep sessions relatively short spread over 4 days.
You don't need to switch between volume and intensity for squat and dead lift as well but rather do light/ medium variants so you're not getting beat up doing the main lifts so frequently though rather incorporating secondary movements to get the necessary volume in.