No. Vivo V11 Pro does not have the EIS support.
Yes, You can record 4K videos with Vivo V11 Pro.
Yes, Vivo V11 Pro has super AMOLED display. It has a PPI ratio of over 400.
Yes, Vivo V11 Pro does have FM radio support.
The Vivo V11 Pro is a solid all-rounder at Rs. 25,990 and offers better value than the Oppo F9 Pro (Review), but for a bit more money. Think of it as a Vivo X21 with a bigger battery and better front camera, but at a much more reasonable price, which is a good recipe.