Personally, I would stick with the non-Pro model. 6GHz is great, but only at short range. The 2x 5GHz radios on the non-Pro allow me to run 1 in the upper portion of the non-DFS channel range (80MHz as the lower 80MHz is taken up by other people's routers - no-one uses the upper portion in my area) and another in the DFS portion at 160MHz as there is no-one in my area using that portion of the spectrum either. This easily handles my 1GBit broadband.
My 6GHz band is totally uncongested as no-one else has 6GHz around me, so I run the full-fat 320MHz channel. But, my phone constantly bounces to 5Ghz as the signal is stronger.
I'm my opinion, and it's just my opinion, having 2x 6GHz radios wouldn't work as well for me.