collinite 845 will go over your dodojuice no problem, collinite is a wax and a good wax at that

1 coat will protect your car up to a year,and its detergent proof

once you've polished,apply some sealant if you've got some if not....get some as it protects your paint from salt,rain,and has uv filters etc, then apply your 845, leave for 10/15 mins.......remove then apply your purple haze.
job done and your car will be protected for winter.
put collinite on your wheels aswell and it will make removing brake dust well easy
