Hi Jacqs -

In general, an electric is easier to play than an acoustic. Typically an electric guitar will have lighter guage strings and be setup for lower action.

Taking a year to be able to comfortably do barre chords I think is not a long time...especially on an acoustic guitar. That's a huge hurdle...congrats!!! I remember the pride I felt when I was first learning when I mastered barre chords.

Based on what you said, I think the SG will be a good choice for you. Compared to Fender guitars (strats in particular), les pauls and SGs have a shorter scale length and slightly narrower neck. I'm of smaller stature and I find my les paul to be more comfortable to play than my stratocaster.