ok you have a similar pc than i have … i can go all ultra with my 3090 with the ultra settings in virtual desktop (=oversampling, you need to calculate a way bigger image than actually used by the vr headset. PICO 4 = 2160x2160 per eye, I render ~3300x3300 per eye)
I don’t know of any app, but as long as it is a wifi 6 router in the same room I tink you should be good …
So I think your setup is ready for the PICO 4 