EnertyrTDR

A designer prepared drawings for a cottage where we have 10ft walls at the back and 16ft wall at the front to accommodate a loft and High Shed flat roof. My question is: 1. do you prepare the layout as 2 floors and lower the walls on the second floor, or 2. do you create it as a single floor and manually change the height of each wall. I can seem to get the roofline to drop properly with the 2 floor scenario as it creates the attic above the second floor that affects the overall height. The interior walls extend up to the underside of the sloped ceiling (no flat ceiling except under the loft. Any suggestions?

I use an older version of Designer PRO. I was debating of upgrading to access more Libraries. However, in review of the Libraries, I cannot see options like Solar, EV, and specifically Heat Pumps with interior Condenser units. Do you have these in the library or do you have a vendor library for ASHP systems? Because these hang on the walls, it is critical to ensure they fit the architecture and home layout.