2020-01-26, 12:35 PM
Wow - that's busy - good luck! 
I've not heard of filtering of nmea0183 being required before, then I don't have as much kit as that, any stuff I've played with just ignores messages it isn't interested in. I don't have any filtering on any SK or any NMEA0183.
IMHO I'd be wary of sending everything through the Pi, one point of failure, Pi goes down you've lost everything though quick scan of your list looks like it could nearly all be done without going through the Pi, just have the pi listening. NMEA0183 can usually have about 4 devices listening to one device talking, just parallel the wires.
I've not heard of filtering of nmea0183 being required before, then I don't have as much kit as that, any stuff I've played with just ignores messages it isn't interested in. I don't have any filtering on any SK or any NMEA0183.
IMHO I'd be wary of sending everything through the Pi, one point of failure, Pi goes down you've lost everything though quick scan of your list looks like it could nearly all be done without going through the Pi, just have the pi listening. NMEA0183 can usually have about 4 devices listening to one device talking, just parallel the wires.