I would take a step back and ask "Why do you want an acoustic bass if you expect to play it plugged in most of the time?"
A headphone jack or a dedicated headphone amp will handle the quiet practicing.
My experience when playing with others has been the people that are offended by an electric bass are equally offended by an amp. So, unless I show up planning to play pure acoustic, they are not glad to see me. (Then there are the bluegrass traditionalists who want a stand up bass and any bass guitar will bother them, acoustic or not).
If I have not caused you to reconsider, then a few comments.
All the Guild acoustic basses that I can recall were 'short' scale except the New Hartford made B-54 which is a 'long' scale.
If the goal is a Guild acoustic bass and the budget is ~$1,200 you have other choices besides a B500E.
I really liked my B4-CE and thought it was pretty versatile plugged in because of Fishman preamp. The reason it is on permanent loan to my sister is because as an acoustic instrument it was not loud enough to keep up with a Guild D-25 and if I had to find power and use an amp, there was pretty much no reason not to use a Starfire instead.
I don't recall anyone commenting about them but the B-140 and B-240 are both available new within that budget. If you can find one there are B50's and B30's at that price. I have not seen a B-54 price for a while but I would expect it to be in that ballpark. B4's are typically under $1,000 and sometimes much lower depending on condition.
If you do go for the B500E make sure you understand how to check the action and the neck angle. Acoustic basses have very few user serviceable parts and neck resets, if needed are several hundred dollars.
Good luck.