Interesting. Although he is not a 1800+. Maybe a 1630+ player, just not 1800+.
Quick Tips (You don't really need to accept them, it's just what I would do):
*At the very beginning, just put 1 villager building the Granary, and aim the other two towards the Gazelle.
*Or kill the rhino immediately with all 3, and just set one to build the granary.
*Kill the lions when you first see them. This will often save you from un unexpected attack from them. (One did end up attacking your villager)
*Scouting with waypoints is a bad habit. Sure it might help you, but you'll always end up negleting him and leave him idle. You should group him, and constantly check on him in the very first 5 minutes of the game. It's very important to have a good archaic scout done.
*I think you have built the first house a little too soon. (Delay it by 30 seconds)
*Spread the pigs around the town center. When you are gathering food from them, just put 2~3 villagers in one piggy.
*Don't go killing pigs while you still have *plenty* of huntable food.
*Get Pick Axe before on while you are advancing! Eco ups are really important. I know you were doing a 4.30, but HD & Pick Axe are vital.
*Move 2~4 villagers from food, and reallocate them to gold when progressing to the Classical.
You did pressure him quite nicecly, and he still tried to Foward Build you! - which led to his horrible defeat.