Or do you really think a router/access point the size of a smoke alarm can perform as well as a router with a quadcore CPU and 1 GB ram?
1GB of RAM is utterly unnecessary for a home router. This the memory usage for a Ubiquiti EdgeRouter Infinity doing 10Gbps routing via OSPF, VRRP and firewalling all as part of a stateful failover pair for a tier 3 HPC facility at work,
[email protected]:~$ free -m
total used free shared buffers cached
Mem: 16054 415 15639 0 82 125
-/+ buffers/cache: 207 15847
Swap: 0 0 0
As you can see not even using 512MB out of the 16GB of RAM it has. The load average is similarly very low given it has 16 cores of 64bit MIPS goodness.
[email protected]:~$ uptime
09:22:48 up 306 days, 18:53, 1 user, load average: 2.84, 3.34, 3.52
For the vast majority of people the optimum placement of access points in their home is impossible with a combined router. In my house for example indoors I can get away with a single access point because it is ceiling mounted which allows me to place it in the radiographic centre of the house. If it was not ceiling mounted it would be in the middle of the floor, and then would not reach the second floor anyway. As I said before my access point and router don't take up any space that would otherwise be considered usable in my house.
You are clearly lucky in your situation however that does not make for good advice in general. I would also say most people would not be happy with such a huge monstrosity in their living room, and it is certainly not child friendly either. I am not sure it is teenager friendly either. I would want to have my router behind a locked cupboard and access points out of physical reach.
In general one or more UniFi AC LR's for example are a much better recommendation. I will also be getting security updates long after your consumer device has been hung out to dry by the manufacture too. Something I consider very important.