i just got an a6000 ob ebay about 2 months ago for 350 with the shitty kit lens! i really like it. i bought it for outdoor use so i wanted something lightweight and that could do high quality video.
my fiance is a photography graduate, and she is really impressed with the Sony line. she even mentioned selling her Canon Mkiii to get one of the top of the line Sony mirrorless cameras after she got a chance to use her friends.
the a6000 battery life does certainly suck. if you get a used one make sure to update the firmware, its supposed to help with the battery issue, as they used to draw a little power when off.
if you plan on getting the big dog Sony at some point, id try to find a cheap a6000 and see how you like it.
With the 16-55mm kit lens, the Novagrade Olympus adapter for 40.5mm threads works perfect on the a6000 if you want to digiscope, should be a great lens for that, just use it in manual focus.