Looking at Anthem preamp. Do I need it? Also the Innuos Zenith (Zen?) and or Lumin T2?

So much to say, I will definitely NOT get it all out here now. 

I am not an audiophile but would like to get better sound from my system. As good as I can get it for my needs and budget. I have a 5.1 System with 2 subwoofers.

Anthem MRX 720 receiver
2 Rythmik 15 inch subwoofers
Paradigm Persona 3f speakers
Parasound HCA2205 AT amplifier (5 x 220 wpc)
I recently added an Anthem STR power amp for the Personas.

Ease of use is right up there with SQ. I love turning on my receiver and having everything there for me. I don't have a source really. I'm not that thrilled with Playfi. I tried Tidal on it, but I think it was just the small screen of my phone that made me not want to use it. I will probably go with Roon and if I could view the menus on my TV screen with anything else, that would trump anything else. SQ will have toi take a back seat to that. I just prefer hard button remotes to touch screens because of my poor eyesight.

I loved the sound before upgrading to the Anthem str amp. I only say this because I did not recalibrate the system as a whole yet. So the settings are still for the previous Parasound amp. I do hear a difference between the Parasound and Anthem. I had the system calibrated professionally, if you will. I don't have the knowledge or the patience to do it. I absolutely loved the results.

So, I want to ONLY stream music now to my 2 front speakers (and subs)  when not watching movies etc... Do I need both the Innuos type product AND the Lumin T2 AND an Anthem preamp? Can I get away with just one or 2 of these products? That is a lot of money for me to spend on just streaming Qobuz or Tidal etc... Maybe even Amazon HD if that ever gets settled. I want to decide and purchase over the next several months and just keep the system for many years. Definitely will be buying used. After that, I will look into speaker cables, IC etc.. But this comes first, I guess. 

Also, where will my bottleneck be if these pieces are selected? Can I get away with the Zen instead of the Zenith? D2 instead of the T2? Can I just buy the T2 and go directly into my AV receiver? One piece would be great! and more affordable of course.

The reason I'm looking at higher priced units is I do not swap out components after purchase.... ever. So, they will stay for a long while.

Thanks for reading.

Also, is there one unit I should buy before the others? I think I made a mistake in buying the amp first. Maybe the Innuos? I may like it into the 720? I doubt it.

Thanks