I found these steps on how to setup the R7000 router as an AP: https://kb.netgear.com/24104/How-do-I-change-my-Nighthawk-router-to-AP-mode-after-I-ve-already-run-s...
This enables you to run an ethernet cable from the EMG2926 to the R7000 and have a second WiFi network from this router.
This could help!
Else, you may want to look into Helix. It's got great WiFi!