The simple answer is yes, the scale length is the open string distance between the bridge and the nut, however
technically that's not correct. One only needs to look at a bridge and it's obvious that EACH string has a unique measurement, therefore the 100%, dead correct answer is..... the scale length of a guitar is measured from the nut to the 12th fret then multiplied by a factor of 2. Ok, we're one step away from a
slide rule, pocket protector, and safety glasses on this one so let's back away while we're still 'cool' guitar players.
Nikki, higher action on an acoustic typically does translate into better sound, however, you have an acoustic electric so the question is do you want it set up to sound better unplugged or plugged in? Which specific model do you have? I see G series that are all laminate, solid cedar tops, different body shapes, etc.