I just replaced my belt and was just as concerned as you are. First of all, its way easier with a lift from the bottom. Find a friend with one, I highly recommend it. Post where you are and see if someone will let you use their lift for a hour or two. Also, there are places that will rent you lift time. Look around, this job warrants it.
First I bought the hex socket:
Titan 15614 1/2-Inch Drive x 14mm Hex Bit Socket - - Amazon.com
www.amazon.com
Then I bought an offset box wrench to grab one of the converted bolts. It didn't work, it slipped too easily. Luckily my buddy with the lift had a shorty socket. Just a 14 mm socket that was 1/2 as deep and a normal one. That worked perfectly. And Two people worked for us. One that held the converter and one that cracked the hex. I had a breaker bar with a 2 ft pipe. When it popped it was really loud, I thought he broke something. Took 2 hours taking our time. Good luck!