Rampage VI Omega - where t put M.2 when using SLI and 9800x

[Gaspode]

So

I'm finally assembling my beast and I'm looking to optimise the NVME

I have Samsung 970 pro that I'm really not sure how best to optimise

The PCIe slots are set up with dual RTXti and I will probably put my sound blaster in the X4 slot.

I'm a bit foggy on how the PCIe lanes thing works with the m.2 locations.

Where is the best place to put the m.2 without impacting either the soundcard or the two x16 slots ?

I know this should be obvious but I'm second guessing myself

Thanks all