I pulled out the fuel boost pump so that I could wire it up, and also to make some room for pieces of conduit to be routed down the center tunnel. I ran a few wires into the conduit, but I think I will get all of the wires ready so that I can do a single pull of them into the conduit (along with a spare pull string). Hopefully all of the wires will fit down through these 2 conduits.
Update: there is no way to run these wires down a conduit in one step. I gave up trying to do this, so my next tactic will be to run the wires individually down the center tunnel and later tie them up neatly and use some split conduit to cover whatever shows coming down the firewall.