I love recordings that are a matrix of a SBD recording and a good sounding FOB-ish recording. The SBD gives the direct sound of the performance, while the FOB recording provides the space and live ambience and feel of the live show.
If you can, just have the FOH guys run you a balanced mix to your own pair of outputs and then record those outputs. Yeah it requires a little bit of extra effort for the FOH guys to set up a second output, but nothing they probably wouldn't do if you offer to buy them a beer. As you probably already know, recording the room mix is oftentimes not a very good option since the room dynamics can oftentimes shift the balance to the point of distraction, say if vocals need to be loud in mix because of the room, or if lead or rhythm guitar is way low in the mix because of the room or how loud you have your amp on stage.
If that's of interest, what I'd do is buy a Zoom F3 that uses 32-bit float format and then use that for your FOH recorder. Press record an hour before the show and you never have to think about it again (assuming you have sufficient power). Then use your Tascam to record the SBD recording...yeah make sure and set levels with plenty of headroom. Or better yet, get two Zooms F3's (or the multi-channel Zoom with 32-bit float) and you never have to worry about levels.
EDIT: Holy shit, just checked out your link...you guys are in Richmond! I live in Chester, but I'm working out in Cali until November. When I get back home, I'll come out and do all of the above for you. I've got quite a bit of high end gear and have been doing the taper thing now for over 25 years. I love taping new bands and helping them get great sounding recordings. That's one of taping passions, actually. I wish I was there now so I could help out sooner, but November will be here soon enough.