Yeah, it needs more, that's for sure. But since you jammed that M32 in there, you don't have ROOM for that "more". C'mon...it's GOT a cab and power already; Eurorack cases should be for things that DON'T. Plus, it not only hampers your ability to build in the cab, this "convenient" strategy also makes the M32 cost a lot more than it does/should. How does that work? Well...
Intellijel's 7U x 104 costs $649. Excluding the tile row, which really should only kick things down by, say, $120, this puts the cost of just the 3U rows at something like $529. 529/208 = $2.54, which is what each 1 hp space in the 3U rows costs, roughly. Now, that sounds minor...until $2.54 x 60 = $152.40!
If you didn't pay $800 and change for your Mother 32...well, hey, here's your chance!!! Just leave it in there, and I kid you not, it DOES cost that NOW.
Basically, don't do this. The style of music you're aiming for, generative ambient, requires a LOT of space for a LOT of modules if you do it correctly. Putting the M32 in the cab shoves 60 hp of possible modular functionality OUT of the case. Leave it where it is.