Moving Chicks Outside

I got chicks today, when they are 8 weeks old AccuWeather is predicting high of 42 and low of 23 outside for about a week and a half and bumps up to 50s and 30s.

I’m reading several different things so my question is: as long as they’re fully feathered do I just move them outside to their coop? Add the heat plate in there just in case - if so what temp should I set it to? Or keep them in my garage with a heat plate for an extra couple weeks then transition to coop? (This is my first set of chickies so they won’t have any older hens to snuggle next to to keep warm).

Pic of the little fuzz balls for tax 💕 if it helps, I’m in MN.