As for the summer - My brothers wear mesh tzitzit in the summers, and though you might not think they count (as per being a garment) there are people who think they do. That way the tzitzit add very little weight to your ensemble. Or, if you're on vacation (don't go to work like this) I have a friend who simply cuts up a couple of shirts and adds tzitziot to the corners. Then he's wearing a sort of weird shirt with slits in the sides, but he tucks it in so ii doesn't flap around, and it works alright, if you're just hanging around and not trying to look adult.

If you want to, go for it! if not, dont. Or change your mind in the middle. Whatever.