20 year old kid getting a 2012 V6 mustang

I’m turning 20 on December 28th, I’ve got around 7-7.5k saved up. It’ll be my first car. I know I should probably make better decisions for my first car, but I definitely couldn’t afford the insurance on the V8 yet. The car is looking at now is a 2012 V6 convertible automatic, in a sort of purple or dark blue, they wanted 8k for it and I was gonna put down 7 and pay the rest off. I thought it would be a good entry into a mustang and if I take care of it my insurance will go down and prepare me for when I’m in my 30s and want an upgrade. Thoughts?