Feeling overqualified for Internship?

I applied to one single internship because I'm a lazy piece of shit and I got it. I should have applied to others but never bothered.

Anyway, I didn't really think and I'm not sure if I'm overqualified.

I got 80%+ averages, I'm 3rd year at a top Russel group uni doing electronics engineering.

The Interview was a hour long. I answered very well. I was told they was very impressed.

However, for example the internship requires minimum degree grade 2:2. I'm well above a first. And I feel like I didn't work to get it and I got it easily. It's got me thinking maybe I should have applied to some others.

I have a week to confirm if I should accept it or not. A part of me is thinking ask them to delay me accepting it a month or so and see if I can get any others? I'm not sure... It's at a massive UK company but idk I feel like I may be overqualified for some reason. Im just scared of it being boring and waste of 12 weeks. The subject area is definitely interesting but will it be challenging?