Hey everyone. I am so excited, 48 hours from now I will have my 1980. The dealership is putting the finishing touches on it tomorrow. I am looking for feedback from those of you who have a Hummingbird 7" Helix DI on the bow. My question is, is it big enough. I am considering having them put a 9" mega up there, however it is going to require them to put it on a mount because a 9" won't mount flush. So, is a 9" really needed? It would also delay me picking it up a couple days. Thoughts?