Can I restore ICS nandroid over JB rom?

Hi :)

I want to return my Note to stock. When I first bought it I rooted it and made a nandroid of the stock ICS rom that was on it.

Since then I have installed Alliance Rom on Jellybean. Can I just restore the stock ICS nandroid straight over the JB rom or will this brick my phone? I've read that there's something about ICS stock kernels that can cause bricks so I'm a bit nervous about how to go about it.

I have already downloaded the two files from the unroot thread to remove superuser and binaries, do I just flash these after restoring the ICS nandroid? Also, how do I get back the stock recovery?

Sorry for such basic questions but I'm new to the Note and it's a bit different to flashing things on the One X which I came from.

Thanks x