The newer routers will give you a choice. You are right; WPA2 is definitely the way to go.
But there is also the question of the speed of your wireless network. You definitely want a dual-band router. That way your fast devices will work at a faster network speed appropriate for them, and your slower devices will work at a slower speed appropriate for them. But if you have a single-band router, the slowest device on your network will determine the speed for all devices on your network. Not good.
It doesn’t work that way, and none of that even matters if you are using your router as a VPN router, as your external connection from a cafe is slower round-trip than any local devices to each other.
Dual-band wireless routers are only useful for speeding up the data throughput of locally connected devices, and then only up to the maximum throughput of the two devices connected to each other, with the limiting factor being the slower device.
That said, if you have a “slow” device at 54 Mbps, and three devices at 100+Mbps, the slow device only slows down communications when another directly talks with it, not when the other devices to the others.
Often, the dual-band wireless feature isn’t fully utilized, as the fallback in congested neighborhoods is to instead migrate communication to the least used bands, even if it means you aren’t using a bonded, dual-band setup under Wireless N.