Budget 10-15K What to buy - RN7S or RN7P?


1. Budget?
A: <INR 15k

2. Preferred display size, type and resolution?
A: Above 5.5", IPS LCD/AMOLED, FHD and above

3. Preferred operating system? (Android (with version), iOS, Windows Phone etc).
A: Android Pie

4. Preferred connectivity options? (4G, 3G, 2G etc).
A: 3G, 4G would be an added advantage

5. Do you have any brand preference or dislike? Please name them.
A: Xiaomi mobiles, because of lots of custom ROMs support. Am using Pie in RN3, thanks to Havoc - while the official MIUI stopped providing update after Nougat.

6. What is your intended use for this phone (internet, camera, multimedia, mails etc.)?
A: Camera, mails and internet

7. Single SIM/ Dual SIM?
A: Dual SIM. Separate SD card slot, if possible.

8. New or Used? Online or Offline?
A: New (Flipkart).

9. Any other requirements?
A: Need good battery backup

10. If you have already considered a phone, then please mention the model
Redmi Note 7S & Redmi Note 7P 4GB versions @ 13k & 14k respectively.

More Info:
Currently using RN3(SD) for last 3 years with Havoc & RRemix ROMs. In recent times, the battery backup is very less as it maybe wearing out and i will replace it in the near future.
With all the buzz about RN7 and am thinking of buying a new mobile (after 3 years), i zeroed on this. I truly dont care much about camera - Being 7S using 660 SD and 7P using 675 SD, will the 1k i pay extra for 7P make a difference?

Also is it wise to wait till 17th july, as Flipkart will be hosting "Mobile Bonanza sale", to get the mobile with 10% discount offer?