I'm playing d&d 3.5. I have a level 12 character who is 5th Psion (Telepath) and 7th Thrallherd. He has created a religion that worships ascension. To gain "immortality" he is going to use Mind Switch, True to put his mind into a 18 year old worshiper. I want to have a place on the astral plane where my old bodys can reside after I use Microcosm on them. How can I build this Structure in the Astral Plane? (I'm getting there via Plane Shift, Psionic)