I'm going to guess...is this built into a "hacked" IKEA cab? The length dimensions seem to suggest that. My suggestion, if you're fitting this with 114 hp x 6U, would be to NOT add the tile row in deference to having 6U of normal Eurorack modules. That way, you'll get the tile functions as well as more capability.
+1 on Jim's take on the picos, too. The big problem with them is that their control space is so tight that it's easy to nudge a control on an adjacent module. It's not just a "small knob problem", but the layout of those modules as well. Circuit-wise, they're all that, though. Frankly, if you wind up with a 228 hp cab, you'll have ample space to do a proper build AND avoid using 2 or 3 hp modules UNLESS you've got a hole that needs filling...and even then, you still might be better off by shuffling things around and clearing space for something 4 hp and up.