I’m designing a suite of guitar effect stomp boxes and need to decide whether I design the PCB for SMT, through-hole or a combination of both.  There are a few components like POTS, switches and jacks that are better suited to through hole components since they make up the physical/mechanical build of the box. My question is should I design the PCB to be 100% through hole or would a mix of SMT and through hole components be OK considering the potential for volume manufacturing?  I’d appreciate any advice.  Thanks.