irave,
What are the exact model numbers of the speakers in your Paradigm Persona 3F setup? I'm assuming you have a pair of floor standers, a center, 2-6 surrounds and 1-2 subs. Please also state whether you are going to use 4K for the Bluray player and video display or projector and what surround sound format you are going to use, 5.1, 7.1, 7.1 with Atmos?
For the electronics, do you have a budget?
In general, I'd suggest streamlining and avoiding redundancy in your system but purchasing high quality gear for the essential components. Here's what I consider the essential components for a 7.1 non-Atmos surround system for 60% HT and 40% music use:
1. A high quality Bluray player similar to the no longer manufactured Oppo-205 player that has a built-in 7.1 surround sound decoding circuitry, HDMI 3.0 inputs and outputs, balanced xlr and unbalanced rca outputs used for both the L+R front surround mains and stereo music L+R channels, built-in wi-fi connectivity with streaming capability, a built-in high quality DAC that has a minimum conversion capacity of up to 24 bit/192KHz high-resolution PCM audio and preferably at least up to DSD 512 capacity and analog rca outputs for all remaining 7.1 surround channels. I believe Panasonic, Pioneer and Sony now have, or are soon coming out with, Bluray hi-end players that meet the above criteria. You could also buy a used Oppo-105 as a high quality Bluray player if 1080P video is sufficient. I currently use a streamlined HT and 2-ch music system using the Oppo-105 for a 5.1 audio surround system connected directly to multiple class D amps and a 1080P hdtv for video connected via HDMI with very good results.
The main benefit of investing in a hi-end Bluray player is that there's no need for an AV receiver, an Anthem surround processor/preamp or an integrated amp as you mentioned. They're all redundant and unnecessary.
2. A high quality 5-channel amp (like your NAD T955) that is connected directly to the Bluray player's analog outputs for the center and up to 4 total side and rear surround channels.
3. A high quality 2-channel stereo amp of your choice to drive your main stereo speakers.
4. From one to four self amplified subs
These are all the essential electronics you need but you always have the option to add a separate regular stereo preamp with a HT pass thru control if you prefer. But I'd suggest first listening to music using the Bluray player as the preamp for music only to see if you think you really need a separate preamp for improved stereo music playback.
Tim