Never enough hours in the Jab, my wife used to treat it like a station wagon. Lately lockdown doesn't help and I can't even get to the airport at all. I saw there is an airport at Mallacoota.
Anyway, the screen doesn't really matter, I only use it for basic setup before switching to VR. I set a shortcut in X-Plane to turn on vr and off. Funny, last night the cable for headphones normally unplugged coming from the headset was interfering with the sensors and made for stuttered images. Glad I worked that out.
I understand about the PC, way too many options. Take a look at youtube
https://www.youtube.com/user/col2mab
As for the headset, Oculus is owned by Facebook if that's not an issue. I heard HP are pretty good but I'm going to stick with HTC for the moment if I had to upgrade.
One final thing, you can tell if you need to adjust the graphics settings in VR if you are getting sick from the jitters in the graphaics. I tried everything max and got sick.