There's no TFAR keys that I think is essential to have. I use the second hat on stick for TFAR, Down for local, right for longrange, up for alt LR, left for shortrange.
Before TrackIR I used the ministick to look around and D for enable/ disable freelook.
when you add these I'll let you fly on pub

If you can solve toddlers blockbox logic puzzle, you can use the profile editor. Just add a macro to button and match it on your ARMA keybindings. Use mouse2 for advanced options.
I can't send my profile because mine is PRO version of x52 and I have custom keybindings for ARMA + Scandic keyboard layout.