all 5V leds are ARGB. The Farbwerk 360 has only 4 channels, not 8. the connectors are doubled up in case you want to use Aquacomputer RGBPX, or standard 3 pin ARGB.
apparently the fans come with a splitter. one connection for 3 fans, so you could use 2 channels for the radiators (6 fans), one for the back fan, one CPU, one GPU, one distro plate, one for the case front strip.
that's 7 channels.
You could see if you can add the back fan to one of the other fan channels depending on what splitters they send with them.. or maybe use a splitter to connect the distro plate and the case strip to the same header, that would go down to 6 channels. (The EK G1 distro plate has 18 leds, the O11 strip has 28, so you cna set the channel to 28 LEDs and both would play)
With a FW360 (4 channels) and an octo (2 channels) you're done and that would be the cheapest solution.
The FW360 already has standard ARGB headers so you're good to go. For the Octo you'll need a couple of these to convert the RGBPX connector to standard ARGB
https://shop.aquacomputer.de/product_inf…roducts_id=3829
Now you could forfeit the Octo channels (they dont support transparency and effect stacking like the FW does), and use two FW360 just for ARGB. Then you have 8 channels and can have more individual control without using splitters.