No need to use leaked ICS kernel (lp1, lp5, lp6) which are not fully stable/supported.
No need to brick your beast with the official ICS kernels (lpy, lpf, lp9) which have the infamous bug.

Samsung has finally responded (did I mention it took too long) and they've Open Sourced the ICS kernels. Now custom kernel development has started. Soon you'll see:
- root, busybox available during flashing.
- no mmc bugs, all working functions.
- new drivers.
- absolute stability.
- possibly new interesting projects.

And obviously the ROMs will then follow suit, eg:
- AOKP with ParanoidAndroid features

Its not correct to give ETA, but the new kernels should be ready in 1-2 weeks and the custom roms in 3-4 weeks. I believe that's not such a long wait, certainly enough to stick with Gingerbread or Stunner and not risk brick.