How to choose WiFi for the Internet over 150 megabits?

Question

Computer networks

Hello.
Connected to the Internet 150 meters per second + LAN in the city up to gigabit. In this regard, the question is - how (what router?) To distribute all this stuff in order to get at least the speed of the Internet via WiFi, and as a maximum, the speed of the LAN.
Devices that will use WiFi :
MacBook Pro 2012
MacBook Pro 2011
iPhone 6
iPhone 8 Plus
1. Do I understand correctly that I need a router that supports "ac" WiFi 5Hz? Will my devices support this type? Or is the usual "n" and 2.4 Hz enough?
2. Is it possible to find a router cheaper than 4k for such parameters? All I found in the city is from 5k rubles.
3. How many quality MikroTik routers?
4. On many routers, for example, Mikrotik wAP AC (RBwAPG-5HacT2HnD), the port is 100 Mb, do I understand correctly, this is an outgoing channel (for example, I connect a laptop from routers by wire), and incoming gigabit? Because the meaning is in 892 meters that it gives, if I do not plug a gigabit channel into it.
Apologies in advance for the hem questions. I really don't understand this. I hope for a detailed answer, not an excerpt from Wikipedia.

Answer 1

RBwAPG-5HacT2HnD

stands in the office, has a gigabit copper port, works fine in "ac" mode.

Answer 2

RBD52G-5HacD2HnD-TC Cheaper for nothing. And the chipset is awesome.

Answer 3

Protocol n using two spatial streams on both devices with a channel width of 40 MHz, also with line of sight and clear Fresnel zone, will give a channel of 300 megabits, the transmission is about half as much