i don't know anything about telescopes... but i do know that the lense is very sensitive... hence the " proper cleaning cloth and cleaning solution"
as for the body, i wouldn't really worry about it. with all the covers over the lenses during storage, none of the outgassings will be able to reach the lense. When you do use the telescope, it will be outside and there will be at least a little bit of air movement to sweep the outgassings away. the amount that is actually going to be given off is so small, i really wouldn't worry about it though.