Actually, one of the more interesting modulation pairings I've been tossing into builds as of late is the Maths with the Quadrax/Qx from Intellijel. The Quadrax is a 2 or 3-stage EG that can loop and have CV over rise and fall, and with the Qx it also outputs "end of X" pulses. Now, since the Maths can use those "end ofs", and also since the Qx can be used to "cascade" the Quadrax with as many EGs in the cascade as you prefer, that gives you some elaborate AND CVable modulation that pairs very nicely with how the Maths deals with its own rise/falls. Crosspatching those two is definitely a "the sum is more than its parts" situation! Then add to that something like Tiptop's MISO or Frap's 321 and a couple of linear, DC-coupled VCAs, and you'll then have a modulation monster!
And yeah, the DFAM doesn't belong in there. Even if you have open space in the cab after removing it, I'd go ahead and do that, as you don't want to be in the habit of having the DFAM in there and using it in there as well. It's a rather expensive mistake, actually...if you want to see how expensive, take the cost of the cab, divide that by the amount of hp it can hold, and then you'll have your cost-per-hp. Multiply this x60, and that's the hidden "extra" cost of cabbing the DFAM in here. Seriously...put it back in its case, and use the Eurorack cab for things with NO power and NO case.