An idea to get CRAZY drive size/thruput on iMac Core2... thoughts pleaz...

Alright, this is totally for speculation (at this point...;), but I just got my iMac Core2Duo 2.16 24" and I started thinkin'...
I do video work, mostly DVCPROHD, which the FW800 port handles fine with a RAID attached. However, I may get some projects that require higher thruput and was thinking of a way to get the crazy drive performance you can only get from SATA RAIDS.
Would it be possible to do the following:
Clear out the internal drive and dremel an eSATA connection through the back of the iMac, hook that up to a 5 drive RAID SATA enclosure (with port multiplier), then boot off an external FW800 drive?
The internal SATA controller is an AHCI 1.1 controller, which according to what I've read, supports port multiplication.
Crazy, yes, no?

Because that would be no fun at all
And it'd cost more as I'd need to buy a monitor (23" cinema display equivalent) and a SATA PM pci card. Not to mention the cost of RAM and probably a video card upgrade. If you factor out the cost of the drives and enclosure, the only thing I'd need for my iMac would be an eSATA connector to mount.
Alas, all my research points to the fact that port multiplication on the AHCI controller is not enabled (it isn't on the MacMini nor the MacPro, so it prolly ain't on the iMac either).
Thanks again, apple.....

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