1.Dawn(should only be used to remove wax from car and NOT for maintenance washes lol)
2.Meguiars gold class for maintenance washes(Mitt just slides off paint,leaves great gloss and available OTC)
3.I dont own a foam gun
yup,use the white pad with UC & then use the grey pad with the 845 and you shuld be fine,now if you would have had a darker car like Dave said you would have to polish afterwards.