Fire Suppression

[Goosesdad]

I've looked into a few different systems and of course there are a ton of options for each, below is the layout I think works and has the most flexibility.

This SafeCraft system comes with (2) automatic release heads, seems to me putting them in the engine bay and at the fuel tank makes the most sense. There are also (2-3) manual release heads, I'm thinking 1 in the engine, 1 under the dash(pointed at the driver). Not sure about putting the third at the fuel tank because the auto should take care of that area and that extra head would reduce the extinguishing time in the engine/cockpit.

Please offer any thoughts or advice, thanks in advance.