New setup

I have a 26' Olympic with a 12 degree hull and I want to install a new fish finder so I decided on the A128 E70237-NAG MFD. I normally fish deep salt water from 10' to 1000' for bottom fish and also tuna and salmon so I need to know which sounder module and transducer will work the best. I want to use the chirp and down vision for image clarity and FF capabilities and also the clearpulse. I had the CP470 module and A80010 B265LH D/T Through Hull Low-High Transducer in mind but there are so many choices I just get swallowed up.

Note: I have a Raymarine autopilot 5000+ that if possible I'd like to connect as well or replace the head unit so I can !!

I really appreciate any input from you guys !!

Allen...