Adding a fet clean channel to 2204 circuit (switchable)

[joesatch]

Are these values on the clean channel okay? I pulled these from another post here. I'm trying to add a clean channel (no tonestack but fet driven) to a 2204 style circuit. I will incorporate a dpdt relay to switch between the two channels  to the PI; one side of the dpdt will mute the standard gain pot (with a ground) when the clean channel is selected and vice versa.