Ghaziabad home: navigating builder legal risks?

Honestly, I'm so fed up of renting, finally taking the plunge in Ghaziabad. Looking at a 2BHK, maybe around Crossings Republik. My biggest fear is builder delays or getting stuck with a non-compliant project. How do you actually verify a builder's legal track record, especially for someone like Asian Aarvanss Developers? If a project like MNG Smart Villa gets delayed, are RERA complaints truly effective? Or is it just a long, drawn-out process? What's the real ground reality?