Soldato
It's a true game changer for me, non VR games now feel quite flat and lifeless. So maybe go for FF7 first, otherwise you may end up not playing it! I bought RDR2 a few days before getting the Rift S, and I haven't been back on RDR2 since.
I bought my Rift S simply after seeing Boneworks - which I then found out was touted as the beginnings of Alyx, but didn't work out that way eventually.
Therefore my first VR gaming experience was a very much movement-based game! It was tough at first - took me a few weeks to get used to it. Frequent breaks, drinking plenty of water, and just knowing when to not push through, as you just can't.
I got a very, very strange visual and physical disconnected feeling for a while after stopping playing - like my hands were still in the VR world? Very odd. Totally gone now.
I've tried my friends PSVR which was pretty cool, but apparently this is even better.
I know not to overdo it though as you said, takes a bit of getting used to. I'll try a few things out for short bursts probably see how I get on.
Reckon I will have time to do both as I'll probably want a break from the VR after a bit