Feasible Concept? Booting to local RAM Filesystem

[Richard]

OK, so digging deeper, it seems like Espen's solution (above) is almost what I'm looking for - I think his kickstart is just for building the ISO, and the ISO is used to boot the OS and move it into the RAM filesystem.

Now, I'm not a Linux whiz (clearly!) so I can't gauge whether it'd be possible to cut out the ISO step, and do essentially the same thing but via HTTP or NFS, and then resume with the booting-from-RAM step. I'll do the homework here, but I'm hoping someone can tell me "yeah, this could work", or "no, there's a show-stopper". (Like, does iPXE-booting from ISO provide a unique option to switchover to the RAM filesystem, where doing the same via HTTP or NFS wouldn't?)

Thanks,
Richard