Ok guys...I have a 2004 Ranger 185vs, which has a manual jackplate and I upgraded last fall to an Ultrex TM w/ I-Pilot Link. I now want to upgrade my electronics from 859 (bow) and 899 (console) to Helix 10 Mega DI (bow) and Helix 10 Mega SI (console). I also have AutoChart Pro software. I want the TM and Helix's to all link. I also want to make sure I have best transducers for the units that I have and best locations for mounting (read alot about upgrades because of the Mega). Also what extra cables, connectors, etc. would I need.

What is the best way to do this right the first time and never look back?

Thanks ahead of time for anyone willing to help me out on this. It is greatly appreciated.