Hi Hyd, whats the fastest and easiest way to get from HYD to Nanded

I am planning to visit Hyderabad, and i wanna visit nanded first , say my flight lands at 12 AM, how do i get from hyd airport to nanded ? 1. Cab 2. There is a train running from Tirupati and reaches hyd at night 2Am 3. Again a flight ( those smaller airplanes ) Also i will be exploring HYD too, so any info on how to see major sites in 2 days that i have. Thankyou!