im not a fan of sata drives in these kindof cases.
sata connectors are horrible.

but if someone can make it work then its worth a try.
But bear in mind that the headline data rate does nothing - nothing at all.
Its the drive latency and seek times that are important with multiple layers.
drive latency and seek time do not reduce with multiple drives in this configuration - if you are really lucky they will increase.

But do not ever try and use one of those horrible internal drive adaptors like the G5 jam - they really dont work - and arent 'movable' -let alone tourable.