Words: Kate Coughlan Photos: Rachael McKenna “Not awesome,” says Christina Perriam, with more than a touch of southern understatement, about how she and her husband Callum Grant felt as they closed the doors of their four-day-old Christchurch retail shop, Perriam, and sent their newly trained staff home indefinitely. It had been a big project to launch a third brick-and-mortar retail outlet, which added to two others — the original Perriam store in Tarras, north of Cromwell, and the more…