Recording a small cathedral choir and organ

I've read some great advice on the forums already, but can't answer this dilemma:



I do hobbyist recordings of a small cathedral choir of around 30 singers and organ and own a single MKH30/40 pair which I use straight into a Sound Devices 722. Time to up my game!



I find mic placement is critical, but the results can be good. I'm after a richer sound though and the 722 is neutral in a flat way, rather than a spacious one.



I've been wondering about some alternatives:



Add a DAV BG-1 before line input of the 722.



Or a DAV BG-2 with some extra mics for choir or organ (I'd still like to keep individual track outputs for mixing, so would need an affordable line-input interface in place of the 722)



Or 4 mics into Apogee Quartet?



3 x MKH 20 on choir then MKH30/40 behind conductor and MKH30/40 raised up high for organ pipes? All into BG8 then RME UC and matrix the M/S pairs in DAW? This is my fantasy rig. Dream on.



I'm wondering which path is best for this type of classical/small ensemble recording? Just squeeze maximum sound from the 2 mics I've got, or record closer with multiple mics?

Recording a small cathedral choir and organ