That looks like a cheap and cheerful system and likely not very good.
I have used the Net Gear Orbi Mesh system. I put it in out lake home and was an early adopter. It was great. I left it for the new owners. In this home I installed the updated system from Net Gear in 2019. It has been set up and forget. It is my kind of product. Excellent coverage throughout the house and no fuss. From my experience of two systems, I have to say strongly recommended. I use the system with the large antennas and strongly recommend that.
For you this is what
I would recommend.
Not sure why the Eero wouldn't be any good.
Bottom line is a single AP can cover 1500 Sq foot in a typical 8 - 20 foot tall space. So most U.S homes, with 1 or 2, properly located, AP's will get the coverage they need.
The Eero 3 piece mesh wifi will get you 500Mbps. Divide that by 8 for the MB/s (62.5). Now that is aggregate for what all antenna at all channels can do. But considering that 4K HD Streams only need a 10th of that....
My advice, if possible, is use a free AP placement calculator. If you register for a free TP-Link Omada Cloud Controller account you can up load floor plans and generate heat maps per SKU for what is going to be optimal. Just hard wire them.
Again I have $168 in TP-Link AP's, VHT40 on 5Ghz, 802.11k/v/r and routinely hit 700Mpbs + with a low overhead protocol like FTP.
In my office I'm wired with both single mode fiber and copper and that is hanging of an Aruba 3810 with 10Gbe module. I get 560MB/s going to my NAS and that's it's max capable across it's three drives.