Looks right to me. For simplicity's sake, this is more or less the process I used for my own software RAIDs in Linux:
http://linuxhelp.blogspot.com/2005/0...-in-linux.html
One thing to note however is that there are advantages and disadvantages of running an LVM on top of a RAID rather than simply formatting the RAID directly. If you run an LVM on top of the RAID, you will be unable to use the journalling capabilities of your filesystem. In other words, I hope you have a UPS.

That said, the LVM makes it quite a simple matter to grow or shrink your filesystem should you want to change the amount of devices allocated for this purpose. So the bottom line is this: If you want to preserve the robustness of your journalled filesystem, don't do LVM at all, just format the RAID and mount it directly. If scalability is more important, go with LVM.