Adding Asus RT-BE92U to Mesh Setup

I would like to add WIFI 7 into my setup. I already have a ASUS Wifi Setup with two ET 8 mesh units.

I intend to place the RT-BE92U as my main router, and move one of the old ET 8's into an area without the best WIFI coverage. (All points are fed by ethernet)

I am guessing if I get this RT-BE92U that I will have to setup my network as new. Will this be ok? And will the other ET 8 units work ok with this new router? (I understand the ET 8s will still only be WIFI 6E, and thats ok.)

Any other things I should be thinking about or perhaps things I am missing?

Thanks!