So you’d only have 3fw space left?
That’s a tough one!
The multiplier would be good to work with the two oscillators though maybe not too dissimilar from the cross modulation sounds it already achieves.
I actually don’t think I could pick just 3fw more modules to go with those two… If you’re going modular i’d even suggest trading out the red pt delay for a blue one to give you 5fw free space, thing is you’ll need a mixer or some other way to go from banana to 1/4" for any audio processes.