Definitely easy! I found everyone at mac to be super friendly and approachable too. Plus, with all the annoying assignments you'll be getting in eng next year, you'll definitely develop a sort of bond with other eng kids. No doubt.
Just remember that you're not the only one with this on your mind, because every
frosh is new to mac and hoping to make a couple friends too. Also, if you're going to welcome week, that'll definitely help reduce that nervousness, and help you feel more comfortable by the time school actually starts. Don't sweat it, you'll be fine!
And like someone mentioned before, if you're living on rez in first year, you'll be able to make a tonne of friends in no time!