Depends on your current infrastructure and how much you're willing to change or upgrade or your budget really... But I personally would go for a unifi/ubquiti Dream Machine Router with PoE (Power over Ethernet) ports on it, then running the Unifi WiFi 6E+ access point every so often. You can get a long distance access point too but that might not be feasible to you if you're working with elevation and floors.

Check out these guys anyways... they're my goto now after using everything else thrown at me that's made for SOHO.