Gerrit, I'm sure the 201XR will be a lovely car, but little setups are available so it may be hard to find a truly good setup for that...
Re- your TLR22, have you tried to replicate the setups from Wesley van Helmond? I drove his 22 and his 22 2.0 and it is amazing on low grip using mid-motor! I'm just saying: it may be worth a shot