Hi KM,
I am highly biased in this respect, so take it with numerable grains of salt, but here it is: really good acoustic tone and really good electric guitar tone are two different animals. Some may be pleased with one amp doing both, but I never have, and here's why.
An acoustic amp's primary purpose is to be as acoustically
transparent as possible,
not coloring the tone so that the guitar's voice comes through. Contrast this to an electric guitar amp whose very voicing is an integral part of your entire tone, particularly when you get into good tube amps. It is no overstatement to treat an amp as an instrument in itself, as it has that much potential effect on your tone and dynamics. That said, solid-state amps tend to offer less color, so this may be your avenue of choice.
There are those who are satisfied with one amp for both voicings. If you are not, I'd suggest you consider a good A/B box that splits your signal: your "A" side for whatever electric tone you want (say, with your pedalboard and into a tube amp), and the "B" straight into a console/PA system for maximum acoustic tone. Just a thought for ya

Edward