Using fvwm2 or fvwm3 and another using gnome. Need advice on best setup. startx/xenodm/gdm both users wheel

Hi,
I have finally been able to get a decent desktop and a new 4k monitor.

I use fvwm2 right now (probably fvwm3 soon).
Another new user will be using gnome.
Both of us are in wheel group.

First, do I need to use xenodm with either fvwm? Or will startx do the
trick?

Second, it sounds like using gdm is best with gnome.

So I was thinking that the gnome user could login and type:
doas rcctl -f start gdm

Then login again.

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fvwm user could either do the same to start xenodm or would startx be
better?


Lastly, is there any way to automate that upon login? Or just make
aliases?

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Thanks,
Chris Bennett