@Robbie26 Outdoors wireless wi-fi is another kettle of fish, would give Powerline a go first, you may have enough speed for what you need to do, keep away from extension cords either side, get from amazon you can return if they don't work. My garage about half that distance, using tp-link TL-WPA4220KIT, do not need speed, works fine general phone you tube steaming when wife is on the treadmill, she does not complain, so i know its fine otherwise be all over me!!!
Edit, you could also install free wifi analyser on your mobile, RE at home, as close as you can get to the outside and still working, see with the mobile where the wifi signal starts to fall off, same in reverse from the garage, they need to cross each other to pass the signal over....
Never tried but you could look see. TP-Link EAP225 AC1200
