Help me choose my new mustang
 

I've owned a v6 2004 and recently totaled it, and am looking for a new, faster car. The car would be a daily driver and have to be fairly reliable since I would need it to go to college (3hr) and back. I'm looking in the range of 7-8k dollars and nothing older than 99.
I've been looking at 3v 4.6 2010 gt, with 140k, also a cobra 01 4v , but when we looked at that one and it spewed oil when we parked it. Mach ones are pretty cool too, this 03 mach one has 210k on it, is that too many for what the car is? He's asking 5500.
I'm looking for around 300+ horse for around 8k , what do you recommend seeing my usage senario