I think the speakers will be fine. Part of my indecision about receivers stem from my ignorance of the featured and specifications in AV that differ from 2 channel stereo. In short, I don’t know what the most important things to consider are. I just want something that performs well, simple to use and will not be obsolete by Christmas.
The receivers I mentioned seem to be fairly up to date on features and have adequate power for 4 ohm speakers.
Things I don’t need are extra room capability, bluetooth, or really streaming capacity as I will be using this stuff with a Roku 4K tv that has just about every streaming option that is available.
So, my thought is to look for maximum performance and accept fewer features that I won’t use. That is why the Integra and the Marantz appealed to me is they are performance oriented. And at under 300 dollars both seem attractive. Mind you I am looking at used products.