Pragnya Montessori School in Pragathi Nagar for IGCSE from class 9, coming from East Marredpally?

My son is in class 8, CBSE. He's showing more interest in the IB diploma route for 11 and 12, and I'm wondering whether two years of IGCSE first would make that transition smoother. Pragnya Montessori School in Pragathi Nagar came up when I was looking at IGCSE options. I know it's a long way from East Marredpally, so the first things I'd want to know are whether they take students joining at class 9, and whether buses come anywhere near the Secunderabad side or we'd be driving. Haven't called them yet, I'm still deciding if this is even worth a visit :)