You might add a mult into 2 hp of that 10. And with the remaining 8 hp, have a look at Doepfer's A-171-2 VCS. Basically half of a Maths, a very useful modulation source to say the least.
'Course, I wouldn't have put the M32 in there, though....it has a cab, plus it eats up a lot of space that could be better used for discrete Eurorack modules.