Is it ok to take spiriva once a day and advair 500 discus twice a day for emphesyma?

Yes. That's the way they should be taken. However, advair is usually 250 for emphysema. The 500 dose is for asthmatics who aren't controlled.
Yes. That is the correct dosing for both of these medications. If ever you have questions, contact (1st) your doctor, then the pharmacist.