PC2 on Computer with 65 inch TV is pretty phenomenal even compared to my 55 inch TV.
I think anything bigger then 65 inch might be just two much.
I would recommend that budget priced steering wheel such as my T-150 and a good quality / sized TV would be better for immersion compared to say expensive wheel and 32 inch or smaller tv.
I like the way you think, too much emphasis is put on “better” wheel and FFB as a path tho search for immersion.
Bigger screen and a wheel position close to that screen is a very important step to immersion.
Before adopting VR as my main tool to immerse myself in my racing games, I used to project my game on a wall, with my rig right in front of the wall, every thing was at a 1/1 scale, once pass the SDE, you quickly learn to look trough it, the immersion was amazing.
An other very immersive item not mention enough is the load cell brake pedal.
Lastly but not least, some type of tactile to feel the road vibrations in your seat and rig also hopes pretending to be racing.
All that said a 32 inch placed right behind the wheel base is already doing a good job.
As far as this thread is concerned, this morning I raced 30 laps at Nurburgring in the Cayman GT4 and I had a very good time. Using Christiaan’s Pure FFB files, PCars2 has a lot to offer even if the pseudo, self proclaimed, SIM experts have auto decided it was not worth their precious SIM racing time.