Very nice :)

If anything I would also suggest to try a regular Wacom tablet (without a display) - because since CAD software is mostly based on a point and click input paradigm, the hand/eye disconnect usually caused by regular drawing tablets is barely noticeable. Unless you need actual freehand sketching of course.

Also, I need to ask : where did you manage to rent a Cintiq ? Through a rental company for photography gear perhaps ?