My bunny molts twice a year. Spring and fall. Then there are smaller shedding periods in between. I'm sure an angora would be a about the same :)
The only problem I have wit molting is how fine the hairs are! They get in your face and they're sticking in your eyes and nose and lips and mouth and its uncomfortable. I brush my bunny outside so it blows away. Supplementing with pineapple or papaya (make sure they have no sugar added!!!) are good for the gut while molting. These can cause excess sugar in the bladder though, so I opt for a cat lick stick from walmart. It's got petroleum and molasses. WAY less sugar than fruit and the petroleum (though not considered healthy necessarily) is a lubricant for the gut so no fur gets stuck which prevents stasis!