I feel your pain. I've been playing the GP series since GP2 only with a keyboard and GP4 at pro/ace level, with pole and wins in all the races and the only assists we can have are auto gear, traction control and steering help which is the only way to actually drive with the keyboard.
F1 2010 is quite hard to play with the KB. I'm trying a career on Easy, to feel the game, (just got it like 1 day ago). I could score a 3rd, a 2nd and 2 wins in 4 races with pole in 2 of them with the Lotus. Hell yeah, Easy is eezzy as far as AI is concerned but I can only do 20% races because it is a real pain to control the car with the KB, particularly in the turns.
I would also like to suggest to people posting setups that they include their lap times in their posts. Please? It is the best parameter for us to use someone's setup. If we can match it, we're doing it right. Else, our driving style/control requires different setups.
I'm so used to GP4 setup system, which uses whole different system and much more options. However, it also uses actual measure systems like lb for pressure/stiffness, metric system for car height, not sure what is the system for wings but it works too.