My first semi auto was years ago and a S&W 5946. The DAO version of the 5906. I purchased it specifically because it was DAO and I dont want a external safety that has to be clicked off.
I learned to shoot with DA revolvers so to me it wasnt that big of a deal that it was DAO.
Sorta like learning to drive .... ya learn on a stick first and then you can drive anything.
Does your CCW class have a restriction on what firearm you can qualify with?
When you want better service from a online gun seller and someplace that actually will talk to you on the phone unlike "Duds" gun shop, try them.