Work in progress (of course)
Based on ScottDee's GREAT model- if you're want to tip - be sure to tip him! https://www.thingiverse.com/scottdee/about
This BT-60 "Tribute" scale version of the Saturn V should fly well on a small 18mm to 24mm motors
The Escape tower is attached using a small length of paper clip or piano wire.
Stay tuned for more updated information, I'm post this now for those modelers who want to get started sooner.
Here is a link to a BT-50 based remix https://www.thingiverse.com/thing:3541352