What is Good NVR model for 10 cameras 8MP and 4MP?

[i6jm]

Hi!

I will supply the number of cameras I have to about 10 cameras.

-5 cameras with 8 mega-pixel quality and records in Highest quality, 25 frames, and a Bitrate: 8192 which is recommended for recording at H265 compression.
Model is: HikVision DS-2CD2T87G2-L

-1 Camera with 8 mega-pixel quality and records in Highest quality, 20 frames, and a Bitrate: 6144 which is recommended for recording at H265 compression.
Model is: HikVision DS-2CD2683G2-izs

-4 Camera with 4 mega-pixel quality and records in Highest quality, 25 frames, and a Bitrate: 4096 which is recommended for recording at H265 compression.
Model is: HikVision DS-2CD2347G2-L or DS-2CD2T47G2-L

I currently own
HikVision DS-7608NXI-I2/8P/S, and I think it will only enough for 5 Cameras 8MP, By recording in Highest quality, 25 FPS, and 8192 H265.
I am currently thinking of upgrading. Are the following models suitable if I find one in the local market?

HikVision
DS-7716NI-M4/16P
DS-7616NXI-I2/16P/S
DS-7816NXI-I2/16P/S

Or do you suggest other models, and lower price?



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And does the use of H265+ compression help in reducing the Bandwidth?

Because I currently have two cameras.
-Camera 1: DS-2CD2T87G2-L
Highest quality.
25 FPS.
Bitrate: 8192
Variable Bit Rate.
H265.
-Camera 2: DS-2CD2683G2-izs
Highest quality.
20 FPS.
Bitrate: 6144
Variable Bit Rate.
H265.

In NVR Bandwidth information page shows that it uses 20MP, and even when switching to H265+ compression, the number remains the same as 20MP.