Substituting hops in a recipe

[Waterlogged]

I did a pale ale and dry hoped with Galxy.  It turned out really well.  I will bring a grwoler to the meeting on Saturday.  My brewing partner is going to dry hop with Palisade.  The galaxy had a aau of 14.5% and the palisades has an aau of 8%.  If it called for 1.5 oz of Galaxy, do I use 1.5 oz of Palisade or do I up that based on a formula???

[Chris Craig]

I think you'll be fine with 1.5oz