updating a 2000 380 Sundancer

I want to install an e80 MFD on my 2000 Sundancer 380.

All I really want from it is GPS MAp of a large lake (cumberland KY), depth from my through hull transducers, and MAYBE one day radar.

First I believe I need the e80, a dsm300, and a GPS 125 ant/receiver..

I assume my 2000 yr Sundancer does not have the compatible dsm. Also will my old transducers work?

Thanks from a real newbie at this stuff..........

Dave