I'm designing a pcb to be supported in the slots of an extruded aluminium enclosure, approximately 200mm x 55mm https://imgur.com/TFKDqkU . I need to put parts at either end of the pcb but much of the middle will be unpopulated. Anyone got any top tips about how I save on wasted pcb, using the standard board houses (dirty PCBs, JLPCB, seeed etc)? I'm particularly hoping for suggestions about the board geometry. Should I cut it in half (making each end smaller) and use wires to connect each end? Are there any nifty tricks that save material?