Did you consider air 4 (or 3) instead of astral? If you bring a Seithkona with your Wyrm, you can cast Luck from the start anyway and easily reach Body ethereal.
You would be lacking Astral Shield (which is nice) and Astral Weapon. OTOH, you would gain Mirror Image and Mist Form, have Cloud Trapezee for strategic movement, not having to worry about Mind Duel and add a magic field to your nation (which would then only be lacking earth and fire magic). What do you think?
Edit: Because I can only count to seven
[ February 09, 2004, 15:03: Message edited by: Patrik ]