Please sanity check my proposed system

I currently have an ST40 bidata with analog Speed/Depth/Temp sensors and an ST4000+ autopilot on my boat. I am repowering to a Yamaha F70 and I would like to take the opportunity to integrate it as well as my Standard Horizon GX1700 VHF w/ GPS (NMEA 0183) all together.

If I purchase an i70, it seems to me the system config would look like so:

1) Connect ST4000+ to ST40 by Seatalk1, then ST40 to i70 by A06073 (ST1 Adaptor cable)

2) Connect i70 to DeviceNet (NMEA2000) backbone by Devicenet Adaptor Cable

3) Connect Motor and VHF w/ GPS to DeviceNet (NMEA2000) backbone by respective non-Raymarine adaptors

If I do this, will I get everything displayed on the i70? ie:

- SOW, Depth, Temp from analog sensors hanging off ST40
- Compass direction from ST4000+
- SOG from VHF GPS
- Engine display (Fuel Flow, RPMs, etc) from Yamaha outboard

Do I need any other widgets that I haven't considered?

Thanks!