thanks for the feedback, wanted to make sure nobody said "you can do it if you really have to, but...". I'm planning to record a lot of different stuff from indoor/outdoor rock shows to high school choral and band concerts and whatever else looks interesting when I can find the time.
I'm going to look closely at the DR-680. Now just need to figure out when I can afford it. I've spent a lot more recently than I had planned. Seems to be a theme.