So I separated the head of a Peavey Combo 300 from its cab a couple weeks ago. Tonight I used its bi-amp capability, sending the highs going to an Eden D410-T, and I sent the lows to the Trace 250SMX head, and into my DIY 210 cab. The Epi Bird benefitted greatly from that signal routing: the Eden handles mids and highs beautifully, and that little 210 can blow out some low end. Some time with the Peavey's eq got it to sit together nicely. The sound was clear and full, not too much of anything. It was a well-ordered sound, felt great.
I'm liking the bi-amp idea.