[CA] [CA11] Axiom installation

[captlad]

I'm going to retire my old C80 and install a new Axiom 9. My mind is a little foggy about what all I need to buy for this. It looks like besides the unit itself, I will need a new through-hull transducer for downscan and sidescan, a sonar box and a new GPS antenna since my unit location will be under a hardtop and the old antenna is unreliable. Do I have this about right. I'm on the Raymarine site gathering my information on what to order and how much it will cost. I'm also considering a certified Raymarine installer, although this is going to add considerable cost to this project. Any help is appreciated.