Right basically ive got some koni adjustable rear shocks for my mk3.5 (94) fiesta. Koni dont do the yellow on car adjustbles for the front of my car, they only do orange off car 3 point adjustable . So i was thinking of putting coilovers on the front. So my question is will this affect handling in anyway as i want it to handle as good as i can get it to?

Also can anyone recommend some springs for the rears?