D3.1 is excellent.
Depending your house size. A mesh network would give you more coverage.
Im assuming you live in NorCal you have Comcast. What service speed do you have? Also having (1) router to cover your living space will be a far stretch. You might end up having some deadspots.
I have spectrum 1gig. Using there D3.1 w/ google wifi attached to a netgear pro-safe 8 switch. Speedtest via hardwired utilizing speedtest.net. Am clocking in at 950-980mbps. Through wifi through the mesh on Samsung 9+, am getting on average 800-850 mbps. Doing a speedtest on gaming console or smartTV, etc will not give you a good reading. If you are planning on streaming or gaming. Wired or 5g network is optimal.