Is this a valid use for the Arcane Dais?

I just realized that I've been misreading the info for the Arcane Dais, thinking that I was required to set up the Endless Spell WHOLLY WITHIN the 3" range, when in fact the description only specifies that it be set up WITHIN range. That being the case, it should then be possible for a wizard, who is in engagement range of an enemy unit during my hero phase, to summon the Dais so that it is outside of engagement range. Thus when the wizard is placed onto the Dais, he is free in the subsequent movement round to move and run/charge normally, right?