Here's what I ended up doing. I had the 5U rack with just the Furman and Alembic preamp in it, so I added the compressors and a patchbay that I had kicking around at the bottom. That way I can try out different permutations and not have to dig around inside the rack..
Right beneath the Alembic is the DBX, and below that is the FMR stuff - the "Really Nice Compressor" (RNC) on the left, and the "Really Nice Leveling Amplifier" (RNLA) on the right. All of them are dual-channel, so should be nice with recording too.
I feel kind of indifferent about the RNC so far. I'm a little skeptical about how useful it will be for recording, as its kinda noisy (quite a bit more hisssss compared with the others), and its not the best one to get for bass IMO. I was able to dial in a couple decent settings.... but then the RNLA got here! That thing sounds absolutely beautiful on bass. Its not transparent at all, but in a good way- gave forth a big thick, "wooly" sound. Not muddy, just punchy and full as all get out. I gigged it Saturday with the Ampeg scroll (single pitbull pickup) and using it subtly combined with a touch of overdrive from the amp it was just great. Nice huge ballsy tone.
The DBX just arrived yesterday, and it also sounds killer with bass. Not anywhere near as coloring as the RNLA (I suspect not everyone would embrace that, especially if you are looking for more of a clear-and-present modern sound). I was able to dial the DBX in pretty easily too when experimenting with it last night. I have a gig this coming weekend, so I'll get to try it out there. I suspect this one will be a lot better for recording use too, compared with the RNC - nowhere near as noisy.
Mark had mentioned the V4B and the natural compression you can get from the tube head, but I don't really feel like I get that from the Orange. I wonder if its because the Orange is kinda overpowered for the venues we play, and the fact that the PA does the heavy lifting. I've actually thought about picking up a V4B as an alternate/backup, and wonder if I can get a more satisfying sound by pushing a smaller amp a little harder.... or maybe I could have someone tune up the Orange to suit me better. I got it new around 2004-05 (its an ad200mk3), and still running it with its stock tubes.