If I wanted a bit more straight line speed should I just bring both wings down by 2 or 3 clicks, or will this unbalance the whole setup ? Would I also need to change some of the other parameters such as tyre pressure ?
I wouldn't change a massive amount with it maybe a click or 2 on both front or rear wings but you may find you'll lose in the corners what you gain in the straights. Tyre pressures keep the same and maybe try lowering the rear wing by 3 clicks and front wing by 1 click