2k is the best bet, just be carefull using it, make sure you wear an airfed mask, a pikey dust mask is not good enough, as 2k is highly poisonous and in 20 years you wont be able to breathe if you get caught

temperature is the key to a good finish, keep it warm, once primed up and flatted down, aim for 2-3 light coats of a solid colour with a 10min flash off period