Check for wear on the side bolsters of the recaros seats.
Also a cold start patch was released for them about 2 years after launch which apparently improved the cars tendancy to "kangaroo" when cold so you check if that's been done.
And I'd agree with advice above, get a R27. However, the F1 decals might put you off. The roof decals are quite a lot, and even if you went with the "delete" decals option, you still got ones on your front and rear bumper.