Thanks also for the kind words about the community, it´s my main reason to spend most of the time here!!
A little more setup advice:
Stabilisor Bar/ Arb:
You should try the standard setup. Try to figure out how the car behaves with your driving style.
If you have a lot of understeer -> front arb softer - rear arb harder
If you have a lot of oversteer -> front arb harder - rear arb softer
Just play around with just a few clicks in the beginning.
The softer the arb is, the more grip the axle has.
Back then touring cars like the BMW had very soft rear suspension to get as much grip on the rear as possible. You can see that in old pictures of such types of cars while cornering. They always lifted the inner front wheel.
Aero:
Aero is no issue on that car since there is literally none.
Transmission:
Adjust the final ratio of your transmission so that you get close to the rev limiter on the longest straight.
Sometimes it also helps to change gears less or shift up relatively early. So taking a corner combination in a higher gear f.e. Gear change cost time but it depends on the track.
Tyres:
Drive some laps and observe your tire temperatures. If you experience high temperatures increase tire pressure. If they remain cold most of the time, decrease tyre pressure.
Reason is that a tire with more pressure is overall stiffer so not a lot of flexing energy resulting in lower temps and vice versa.
Always driving at the limit results in very high tire temps in corners. If a tire gets to hot it has less grip.
So if you observe high temps try to take it easier in corner entry.
Brakes:
If you experience the car stepping out under braking adjust brake distribution to the front and vice versa.
I´ll leave out sprngs and dampers, camber and toe.
First try the stuff mentioned above. All the rest needs more time/laps to be validated.
All that stuff influences themselves. That´s the difficult part about it.
So start with simple stuff...rest will come to you over time!!
Check out that video. It´s a different car and track but towards the end i talk about where i look at while driving. Might help.
CU on Thursday!
Cheers Dan