Do standard 80" openings. A pantry of any variety is a utility space, not a featured attraction. Same with the opening to the foyer. It will look better having some wall over it to emphasize the different ceiling heights. And unless arches are prominently featured throughout the whole home, skip them as well. Simple square cased openings work best with most home styles.

No window on the lower right? I would think you'd take the opportunity for the extra light.

Most definitely, lower the arched opening. We have minimum of 10 foot ceilings, some areas higher on our main floor and all openings are 8 feet high. Good luck!

Probably just a mistake and they meant to specify 8ft. (maybe the fur down was added later)

It looks to me that they specified 90" tall openings, or 7'-6", which will leave an adequate amount of space until the ceiling.

typically 5090 means 5ft-0in x 9ft-0in and not 50"x90"

"typically 5090 means 5ft-0in x 9ft-0in and not 50"x90""

This is the kind of dimensioning shorthand favored by homebuilders and is subject to misinterpretation because there are no architectural drawing standards for it.

The best way to show the size of a wall opening is to dimension it in feet and inches. If it has an arch it should be shown in an interior elevation not only to help the builder but so the owner can review it. Multiple arches in the same room should be used with great care.

The appropriate way to show a door size is to give it a code that references a door schedule where additional information can be given like the hardware, finish and the shape of the top.

The same goes for windows because the order numbers used by manufacturers are based on many different conventions; some reference the frame size, others the sash size and others the glass size. 30 can mean 2'-6" or 3'-0" and the second half of a double hung order number can reference just the height of one sash.

It is wise to avoid cryptic esoteric notations of any kind on contract documents unless you want to fill your garage with oddly proportioned windows.

got it all worked out. all openings will be a uniform 8 feet tall. :)