[I wonder why you want an acoustic.]
Strings on a acoustic are thicker, and less “pliable” than electric strings, requiring more finger effort to play a fret or to bend than an electric.
I first learned on an electric and thought I was a great player, until I picked up an acoustic.
In other words, it’s best to train your fingers on an acoustic and then move to electric.
Not necessarily. First thing is to learn how to play six strings learning the chord positions and scales and obtaining the ability to fret both cleanly. It’s a lot easier to do it with nine or ten gauge electric strings on a 24.75” scale thin neck than on a 25.5” thick acoustic neck. Once you can do it, grab a cheapo acoustic and play it. I used to use an old Martin flat top to build up hand and finger strength and after a day or so of flailing the Martin, I could just fly on the Les Paul and Tele. Bottom line is if you start to play, you’ll not be satisfied with just one six string. The disease is referred to as “GAS”. Guitar Acquisition Syndrome.