bell fibe giga 4000 passthrough

I have my network setup with ASUS AiMesh, and I don’t want to loose it. Bell Fibe as a ISP. Upgrade to 4000Giga. Before : no Bell route at all. Just the ONT box and 5e to n’y ASUS RT-AC3100. No need for FibeTV to run (I stream straight from appleTV). With new setup : fibe to 4000, wifi...