My hubby works on CAFB, we just moved to Mount Pleasant, the commute is about 40 mins, depending on traffic, can take longer or less time. Of all the Af bases we have been stationed at the areas close to base have generally not been that good, I am a newbie here, so cannot really say what it is like here, your child is still young, but depending on how long you are planning on being here, you may want to think about school districts too, I know that Dorchester 2 and Mount pleasant have good ones.
Good luck with your move, if you need any more help/info, just ask, the people on this forum have been a great help to me