How far is it from the parking area to the cliff dwellings?

You need to take the mesa loop road to see all the dwellings. I think in all its about 5 or 6 miles around. There are several stops depending on what you want to see. From the parking lot its about 2 miles to the first stop.

10 minutes guided tours, 50 minutes self guided

Yes .. Multiple.

And there is a spot where it's a mile and a half hike to see another set of ruins

There are overlooks along the park loop road where you can view some of the dwellings without hiking.