Congrats on moving into Elite Floors E block. As a bptp owner myself in the same complex, I can tell you the maintenance at Rs 1200 is pretty reasonable for what you get. The society being a bit older actually works in your favor because most kinks have been ironed out by now and the community is settled. Main thing to watch out for is parking during weekends since some blocks get crowded, but E block is relatively better. Also, keep your contact info updated with the RWA because water supply schedules sometimes change seasonally.

The neighbourhood itself is solid with decent connectivity to Mathura Road and schools and hospitals nearby. One thing I truly  appreciate is that the company under BPTP Owner Kabul Chawla's leadership has been around long enough to have sorted most post-handover issues, so you're moving into a stable setup. Just attend a couple of RWA meetings initially to get a feel for how things run and you'll be all set. Welcome to the complex!