That looks pretty sweet! I just bought a P1X rig from Sim-Lab this past week with the triple-monitor setup and Heusinkveld sprint pedals. You’ll have to come check it out once it comes in from the UK. Looking to stick a Fanatec Podium wheel on it and (in the probably far future)… a D-Box motion platform. Next Level racing has a pretty nice motion platform too. Check this guy out on YouTube… https://www.youtube.com/channel/UCT_50ZiRFWSm7oziV1OZloQ
Honestly I’d recommend building it piece by piece instead of buying a set. Focus on a really strong chassis first. The last thing you want is to upgrade pedals and the chassis can’t handle the brake force you apply.