Yes you can get a better launch than that 2.7 60ft you pulled. Put it this way, I've pulled a 2.7 60ft in my sister's automatic Integra. Your clutch is fine, with your skill right now the least thing you would want is a tougher clutch to deal with.

Practice makes perfect. Keep on figuring out your most comfortable way to launch. Some people like to dump the clutch, some people like to slip. Shave those tenths off that 60ft and you'll see much better results in your elapsed time.